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Physics Final Exam Review Fall 24

Total questions: 146

Worksheet time: 3hrs 43mins

Name
Class
Date
1.
speed with direction
a)
Speed
b)
Velocity
c)
Acceleration
2.

This occurs when an object speeds up, slows down, or changes direction.

a)

Speed

b)

Velocity

c)

Acceleration

3.
Avery likes to walk 30 feet in 10 seconds. What is her speed?
a)
3 feet/sec
b)
6 feet/sec
c)
10 feet/sec
d)
2 feet/sec
4.

At what speed would a car have to move in order to travel 20 kilometers in 2 hours.

a)

5 km/hr

b)

10 km/hr

c)

20 km/hr

d)

40 km/hr

5.
A measurement of how fast an object is moving
a)
Velocity
b)
Speed
c)
Vector
d)
Acceleration
6.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
7.
 Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?
a)
800
b)
400
c)
0
d)
200
8.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
9.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
10.
What is the total displacement of the object represented in this motion graph?
a)
5 meters
b)
4 meters
c)
2 meters
d)
0 meters
11.
What is the total displacement of the object represented in this motion graph?
a)
0 meters
b)
10 meters
c)
11 meters
d)
20 meters
12.
This graph demonstrates an object that is -
a)
Increasing speed
b)
At a constant speed
c)
Decreasing speed
d)
Stationary
13.
This graph demonstrates an object that is -
a)
Increasing speed away from the start
b)
Moving away from the start at a constant speed
c)
Decreasing speed toward the start
d)
Moving toward the start at a constant speed
14.
This graph demonstrates an object that is -
a)
Increasing speed 
b)
At a constant speed
c)
Decreasing speed 
d)
Stationary
15.
Which line represents an object moving at a faster speed?
a)
A
b)
B
16.
This graph demonstrates an object that is -
a)
At a constant speed
b)
Increasing speed
c)
Decreasing speed
d)
Stationary
17.

This is a velocity-time graph. What is the object doing in segment A?

a)

Speeding up

b)

Slowing down

c)

Constant Velocity

d)

Not moving

18.
This is a velocity-time graph.  What is the object doing in segment B?
a)
Positive acceleration
b)
Negative acceleration
c)
Constant Velocity
d)
Not moving
19.

This is a velocity-time graph. What is the object doing in segment C?

a)

Speeding up

b)

Slowing down

c)

Constant Velocity

d)

Not moving

20.

An object in free fall is acted on only by the force of gravity

a)

True

b)

False

21.

A very massive object will free fall at the same rate of acceleration as a less massive object

a)

True

b)

False

22.

When a rock is dropped, it will accelerate downward at a rate of 9.8 m/s^2. If the same rock is thrown downward (instead of being dropped from rest), its acceleration will be ___.

a)

less than 9.8 ms29.8\ \frac{m}{s^2}  

b)

more than 9.8 ms29.8\ \frac{m}{s^2}  

c)

9.8 ms29.8\ \frac{m}{s^2}  

23.

What is the difference between a vector quantity and a scalar quantity?

a)

A scalar has a magnitude and direction and a vector has only a magnitude

b)

A vector has a magnitude and direction and a scalar has only a magnitude

c)

A scalar has a direction and a vector has a magnitude

d)

None of the above

24.

A baseball catcher throws a ball straight up and catches it in the same spot. A what point in the balls trajectory does it experience a velocity of zero.

a)

Midway on the way up

b)

At its peak height

c)

The instant it leaves the catchers hand

d)

The instant before it arrives in the catchers mitt

25.

A ball is thrown straight up into the air. As the ball travels upward, the speed of the ball

a)

increases

b)

decreases

c)

stays the same

d)

behaves randomly

26.

An automobile with an initial speed of 4.30 m/s accelerates uniformly at the rate of 3.0 m/s2.  Find the final speed after 5.0 s.

a)

Δx\Delta x  = v0t + 12\frac{1}{2}  at 22  

b)

vf2 = v02 + 2a Δx\Delta x  

c)

vf = v0 + at

d)

v = Δxt\frac{\Delta x}{t}  

27.

A car traveling initially at +7.0 m/s accelerates uniformly at the rate of +0.80 m/s2 for a distance of 245 m. What is its velocity at the end of the acceleration?

a)

Δx\Delta x  = v0t + 12\frac{1}{2}  at2

b)

vf2 = v02 + 2a Δx\Delta x  

c)

vf = v0 + at

d)

a = Δvt\frac{\Delta v}{t}  

28.

A car accelerates uniformly in a straight line from rest at the rate of 2.3 m/s2. How long does it take the car to travel 55 m?

a)

Δx\Delta x   = v0t + 12\frac{1}{2}  at2

b)

vf2 = v02 + 2a Δx\Delta x  

c)

vf = v0 + at

d)

Δx = vt\Delta x\ =\ vt   

29.

Turner’s treadmill runs with a velocity of -1.2 m/s and speeds up at regular intervals during a half-hour workout.  After 25 min (1500 s), the treadmill has a velocity of -6.5 m/s.  What is the average acceleration of the treadmill during this period?

a)

Δx\Delta x   = v0t + 12\frac{1}{2}  at2

b)

vf2 = v02 + 2a Δx\Delta x  

c)

vf = v0 + at

d)

v = Δxtv\ =\ \frac{\Delta x}{t}  

30.

The Position vs. Time graph of an object experiencing constant (nonzero) acceleration looks like:

a)

A Straight Line with Nonzero Slope

b)

A Horizontal Line

c)

A Parabolic Curve

d)

A Logarithmic Curve

31.

The Velocity vs. Time graph for an object experiencing constant (nonzero) acceleration looks like:

a)

A Horizontal Line

b)

A Straight Line with a defined, nonzero slope

c)

A Vertical Line

d)

A Parabolic Curve

32.

What variable letter is altitude or height?

a)

dx

b)

vx

c)

dy

d)

vy

33.
Does horizontal velocity change if you ignore air resistance?
a)
yes
b)
no
34.
Does vertical velocity change as a projectile rises and falls?
a)
yes 
b)
no
35.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
36.
What is the horizontal acceleration of a projectile?(neglect air resistance)  
a)
0 m/s2
b)
9.8 m/s2
37.

What variable letter is range or horizontal displacement?

a)

dx

b)

vx

c)

dy

d)

vy

38.

What variable is vertical velocity?

a)

dx

b)

vx

c)

dy

d)

vy

39.

What variable is horizontal velocity?

a)

dx

b)

vx

c)

dy

d)

vy

40.

What assumption can you make for the acceleration, in the x-component of projectile motion?

a)

-9.8 m/s^2

b)

9.8 m/s^2

c)

9.8 m/s

d)

0 m/s^2

41.

What assumption can you make for the acceleration, in the y-component of projectile motion of a dropped object?

a)

-9.8 m/s^2

b)

9.8 m/s^2

c)

-9.8 m/s

d)

0 m/s

42.

What assumption can you make for the acceleration, in the y-component of projectile motion of an object thrown upward?

a)

-9.8 m/s^2

b)

9.8 m/s^2

c)

9.8 m/s

d)

0 m/s

43.

Where is Vy the lowest? (Vy is vertical velocity.)

a)

A

b)

B

c)

C

d)

Both A and C

44.

The force acting on projectiles during its motion.

a)

air resistance

b)

gravity

c)

balanced force

d)

unbalanced force

45.

The Data table shows how the velocity changes over time. What value should go in box A.

a)

-10

b)

0

c)

10

d)

30

46.

The data table shows the velocity of a projectile. What value should go in box 'B'

a)

-10

b)

0

c)

10

d)

30

47.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
48.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
49.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
50.
Slamming on the brakes in a moving car makes a passenger move forward against his or her seat belt because
a)
the passenger has the inertia to keep moving forward
b)
the passenger is being pushed by the seats of the car
c)
the passenger is better able to stop themselves in this manner
d)
the passenger has an equal and opposite force supporting their weight
51.

What are Newtons Laws of Motion Nicknames?

a)

Law of Inertia

b)

Law of Action Reaction

c)

Law of Gravity

d)

Law of Acceleration

52.

What is Newton's First Law

a)

F=ma

b)

Every action has an equal and opposite reaction

c)

An object at rest stays at rest, an object in motion stays in motion.

d)

Gravity is a real downer

e)

What goes up, must come down

53.

What is a PUSH or PULL of an object?

a)

Motion

b)

Force

c)

Friction

d)

Gravity

e)

Tension

54.

Which force(s) will always result in a change in an object's motion?

a)

gravity

b)

balanced forces

c)

unbalanced force

d)

net force

e)

Newton Force

55.

The tendency of objects to resist a change in motion is called:

a)

Friction

b)

Inertia

c)

Gravity

d)

Velocity

e)

Impetus

56.

Letting go of a balloon full of air is demonstrating Newton's ______ _______ ________ _________ because the air comes out of the back and the balloon moves forward.

a)

1st law of motion

b)

2nd law of motion

c)

3rd law of motion

d)

4th law of motion

e)

silliness

57.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
58.

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia.

a)

m = 3.0 kg

b)

m = 0.3 kg

c)

m = 3.0 ml

d)

m = 75.0 g

e)

cannot be determined

59.

Name the missing force....

a)

weight force

b)

normal force

c)

frictional force

d)

tension force

e)

forced to be here

60.

Which is an example of the law of inertia?

a)

When you let go of a balloon it flies away.

b)

A soccer ball accelerates faster than a bowling ball when kicked.

c)

Blood rushes from your head to your feet when quickly stopping on an descending elevator.

d)

A dog chases a cat cause thats what they do

61.

What is the attractive force that exists between all objects that have mass?

a)

Weight

b)

Mass

c)

Gravity

d)

Viscosity

e)

Krush

62.

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

a)

The cannon moving forward

b)

The cannonball moving forward

c)

The cannon moving backward

d)

The cannonball moving backward

e)

The enemy going splat

63.

This object would be moving (pick all that are correct):

a)

up

b)

down

c)

left

d)

right

e)

not moving at all

64.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
65.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
66.

A hockey puck glides to the right across the ice at a constant speed on a practically frictionless ice.

a)
b)
c)
d)
67.

A downward-moving skydiver who has just opened the parachute is slowing down.

a)
b)
c)
d)
68.

This diagram can be used to indicate which of the following?

a)

a object at rest

b)

an object moving at a constant velocity (speed)

c)

an object accelerating

d)

(Trick question -- there is only one correct answer)

e)

an object decelerating

69.
friction is a force that acts 
a)
in the same direction as the motion
b)
opposite to the direction of the motion
c)
opposite to the applied forces
d)
the same direction as the applied force
70.

By what factor is the larger box accelerated compared to the smaller?

a)

1/2

b)

2

c)

50

d)

500

71.

What is the difference in accelerations?

a)

5N

b)

0.2 m/s2

c)

0.3 m/s2

d)

0.1 m/s2

e)

there is no acceleration

72.
What happens when unbalanced forces act on an object at rest?
a)
the object remains at rest
b)
the object begins moving in an unpredictable direction
c)
the object begins moving in the direction of the net force
d)
the object begins moving opposite to the direction of net force
73.

find the acceleration of the box.

a)

12m/s2 towards right

b)

12m/s2 towards left

c)

40m/s2

d)

60m/s

74.

If the wind is heading south with a force of 5 N, and a car is going north with force of 78936 N, what is the Net Force and Direction.

a)

78931 N North

b)

78931 N South

c)

78531 N North

d)

78531 N South

75.

If the net force (Fnet) is 0, _____

a)

the forces are balanced.

b)

the object just keeps doing what it was doing.

c)

the object maintains its same speed and direction.

d)

the object maintains its velocity.

e)

the object does not speed up, slow down, or turn.

76.

If the velocity of the object is to the left, the object will _____.

a)

speed up

b)

slow down

c)

turn

d)

accelerate to the left

77.

How will this object move?

a)

It definitly won't be moving.

b)

It will move to the right.

c)

It will move to the left.

d)

It will move in both directions.

e)

it will not accelerate

78.

In order for an object to experience friction, the object MUST:

a)

Be in contact with a surface.

b)

Be in motion.

c)

Be in motion across a surface.

79.

Which type of surface will have the LEAST amount of friction?

a)

Ice

b)

Glass

c)

Rubber

d)

Sand paper

80.

There are two type of friction: static friction and kinetic friction. Which best describes the type of friction being observed by the following object?


An table is being pushed at a constant velocity across the floor.

a)

Static Friction

b)

Kinetic Friction

81.

There are two type of friction: static friction and kinetic friction. Which best describes the type of friction being observed by the following object?


An table is being pushed, but remains at rest.

a)

Static Friction

b)

Kinetic Friction

82.

How is static friction calculated? Select all that applies

a)

Fs = μsFN

b)

Fs = μmg

c)

Fs = μsmg

d)

Fs = μsFg

83.

How is kinetic friction calculated? Select all that applies

a)

Fk = μkFg

b)

Fk = μkFN

c)

Fk = μmg

d)

Fk = μkmg

84.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
85.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
86.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?
a)
9
b)
18
c)
72
d)
144
87.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if one of the masses were doubled?
a)
9
b)
18
c)
72
d)
144
88.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
89.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
90.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
91.

You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.

a)

18 N

b)

36 N

c)

72 N

d)

144 N

92.

What's the centripetal acceleration of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

a)

8.23 m/s2

b)

10.54 m/s2

c)

12.86 m/s2

d)

17.39 m/s2

93.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
94.
Name the missing force...
a)
normal force
b)
applied force
c)
frictional force
d)
tension force
95.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
96.
Name the missing force...
a)
tension force
b)
frictional force
c)
normal force
d)
spring force
97.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal

b)

abnormal

c)

static

d)

inertia

98.

The force exerted by ropes and chains is called

a)

tension

b)

normal

c)

elastic

d)

mechanical

99.

Paired forces are

a)

in opposite directions

b)

always equal

c)

not possible

d)

added together

100.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

101.

Which of the following is true about this free-body diagram?

a)

the forces are are balanced

b)

the object is free-falling

c)

the object is moving upward

d)

the forces are unbalanced

102.
What is the direction of the force of gravity acting on the box?
a)
down the ramp to the right
b)
straight up
c)
straight down
d)
up the ramp to the left
103.

Potential energy is _____ proportional to the _____ of an object.

a)

inversely, mass

b)

inversely, height

c)

directly, speed

d)

directly, height

104.

If we double (x2) the height of an object, its potential energy will...

a)

quarter (x1/4)

b)

halve (x1/2)

c)

double (x2)

d)

quadruple (x4)

105.

If we triple (x3) the height of an object, its potential energy will...

a)

become 1/4 the original

b)

become 1/3 the original

c)

triple (x3)

d)

quadruple (x4)

106.

Kinetic energy is _____ proportional to the _____ of velocity.

a)

directly, amount

b)

directly, square

c)

directly, cube

d)

inversely, square

107.

If we double (x2) the speed of an object, its kinetic energy will...

a)

quarter (x1/4)

b)

halve (x1/2)

c)

double (x2)

d)

quadruple (x4)

108.

If we triple (x3) the speed of an object, its kinetic energy will...

a)

become 1/9 the original

b)

become 1/3 the original

c)

triple (x3)

d)

become 9x the original (x9)

109.

If we halve (x1/2) the speed of an object, its kinetic energy will...

a)

become 1/4 the original

b)

become 1/2 the original

c)

double (x2)

d)

quadruple (x4)

110.

A ramp is 0.5 m high. What is a 30 kg child's gravitational potential energy at the top of the ramp?

a)

3.75 J

b)

4.9 J

c)

15 J

d)

147 J

111.

Determine the kinetic energy of an 80 kg skydiver falling at a terminal speed of 55 m/s.

a)

2200 J

b)

43,120 J

c)

121,000 J

d)

242,000 J

112.

Determine the kinetic energy of a 1000 kg roller coaster moving with a speed of 20 m/s.

a)

10,000 J

b)

196,000 J

c)

200,000 J

d)

400,000 J

113.

A baby carriage is sitting at the top of a hill that is 21 m high. The mass of the carriage with the baby is 1.2 kg. What is the carriage's gravitational potential energy?

a)

25.2 J

b)

246.96 J

c)

264.6 J

d)

529.2 J

114.

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. Calculate the car's kinetic energy.

a)

20 J

b)

560 J

c)

22,400 J

d)

896,000 J

115.
In order for Work to happen, what 2 things must occur?
a)
Mass and Displacement
b)
Force and Mass
c)
Force and Work
d)
Force and displacement
116.
How many joules of work are done against a cart when a force of 50 N pushes it 1 kilometer away?
a)
7000 J
b)
5000 J
c)
5500 J
d)
6600 J
117.
Work of 2000 J is required to push an object 1.5 km. What is the force?
a)
2.5 N
b)
1.3 N
c)
1.6 N
d)
12 N
118.
Calculate the work done by a 47 N force pushing a pencil 0.26 m.
a)
12.2
b)
13.5
c)
12.8
d)
11.2
119.

This term refers to the amount of matter contained in an object.

a)

Joules

b)

Matter

c)

Energy

d)

Mass

120.

This is a type of potential energy.

a)

Sound energy

b)

Electrical energy

c)

Chemical energy

d)

Thermal energy

121.

This is a type of kinetic energy.

a)

Gravitational energy

b)

Elastic energy

c)

Sound energy

d)

Nuclear energy

122.

This is they type of energy stored in a battery.

a)

Gravitational energy

b)

Elastic energy

c)

Nuclear energy

d)

Chemical energy

123.

This type of energy is a measure of how fast the particles of an object are moving.

a)

Sound energy

b)

Thermal energy

c)

Radiant energy

d)

Thermal energy

124.

If two objects are about to be dropped from some height, the heavier one has:

a)

Less potential energy

b)

More potential energy

c)

The same amount of potential energy

125.

If two marbles are rolled down a ramp from some height towards a container the _______ marble will move the container farther because it possess more _________ energy as it approaches the end of the ramp.

a)

heavier, kinetic

b)

heavier, potential

c)

lighter, kinetic

d)

lighter, potential

126.

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

a)

-2.5

b)

-10

c)

-18

d)

-45

127.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
128.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
129.
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
a)
6030 kg
b)
0.0134 kg
c)
74.4 kg
d)
80 kg
130.
While playing pool, Emma notices that the pool balls bounce apart.  What type of collision is this?
a)
Elastic
b)
Inelastic
c)
Explosive
d)
Force
131.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
132.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
133.

The picture shows what type of collision?

a)

Elastic, Inelastic and Perfectly Inelastic Collision

b)

Inelastic Collision

c)

Perfectly Inelastic Collision

d)

Elastic Collision

134.

The momentum after objects collide in a perfectly inelastic collision is written as:

a)

m1m2+v1,iv2,im_1m_2+v_{1,i}v_{2,i}

b)

m1v1,i+m2v2,im_1v_{1,i}+m_2v_{2,i}

c)

12m1v1,i2+12m2v2,i2\frac{1}{2}m_1v_{1,i}^2+\frac{1}{2}m_2v_{2,i}^2

d)

(m1+m2)vf\left(m_1+m_2\right)v_f

135.

Conservation of momentum means that the initial and final momentum in a collision are

a)

different

b)

the same/equal

c)

impossible to determine

d)

always the same as the kinetic energy

136.

In a two-body collision,

a)

momentum is always conserved

b)

kinetic energy is always conserved

c)

neither momentum nor kinetic energy is conserved

d)

both momentum and kinetic energy are always conserved

137.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
138.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
139.

In what type of collisions, both momentum, and total kinetic energy is conserved?

a)

Elastic, Inelastic and Perfectly Inelastic Collisions

b)

Perfectly Inelastic Collisions

c)

Elastic Collisions

d)

Inelastic Collisions

140.

Kinetic energy is conserved __________ collisions.

a)

only in elastic

b)

only in inelastic

c)

in all

d)

never during

141.

When two objects collide, their momentum after the collision is explained by ______.

a)

Newton’s first law of motion

b)

Newton’s second law of motion

c)

Newton’s third law of motion

d)

the conservation of momentum

142.

A real car moving at 10 km/h has more momentum than a toy car moving at the same rate because ______.

a)

its mass is greater

b)

its mass is less

c)

it moves faster

d)

of friction

143.

If an object with a mass of 12 kilograms is moving at 10 meters per second, what is its momentum?

a)

120 kg*m/s

b)

120 kg*m*s

c)

1.2 kg*m/s

d)

1.2 kg*m*s

144.

Newton's Second Law of Motion can be summarized by which equation?

a)

M = F/a

b)

F = ma

c)

F = m/a

145.

Determine the momentum of a 0.145 kg baseball thrown at 44.7 m/s.

a)

6.4815 kg*m/s

b)

3.0827 kg*m/s

c)

30.2 kg*m*s

d)

64.82 kg*m*s

146.

A projectile of mass 1 kilogram traveling at 9 meters per second collides with another projectile of mass 2 kilograms traveling at 6 meters per second in the same direction. If the projectiles "stick" together after their collision, what is their velocity after colliding?

a)

7 m/s

b)

8 m/s

c)

7.5 m/s

d)

9 m/s

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