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Semester 1 Physics Review

Total questions: 73

Worksheet time: 3hrs 55mins

Name
Class
Date
1.
The speedometer on your car tells you
a)
average velocity
b)
instantaneous velocity
c)
average speed
d)
instantaneous speed
2.
What is this graph representing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
3.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
4.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
5.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
6.
What is happening in this graph from point B to C?
a)
The object is going down a hill.
b)
The object is returning to its starting location.
c)
The object is slowing down.
d)
The object is staying still.
7.
What is happening in this graph from point A to B?
a)
The object is accelerating.
b)
The object is not moving.
c)
The object is decelerating.
d)
The object is moving at a constant speed.
8.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
9.
If you run around the football field (which is 2 miles) 3 times, what is your distance?
a)
0 miles
b)
3 miles
c)
6 miles
d)
9 miles
10.

An object travels 100 m North then 50 m South. What total distance did it travel?

a)

150 m

b)

50 m North

c)

50 m South

d)

150 m North

11.

An object travels 100 m North then 50 m South. What is its total displacement?

a)

150 m

b)

50 m North

c)

50 m South

d)

150 m North

12.

A runner runs 2 laps around a track with a circumference of 400 m. What is their total distance?

a)

800 m

b)

0

c)

400 m

d)

400 m North

13.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
14.
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.
a)
30 m/s
b)
24 m/s2
c)
9 m/s2
d)
81 km/hr
15.
How fast is the car traveling at 30 seconds?
a)
5m/s
b)
10m/s
c)
20m/s
d)
30m/s
16.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
17.

When Izzy and Zoe pull on the rope with the same amount of force, the forces are _____.

a)

increased

b)

unbalanced

c)

balanced

d)

decreased

18.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
19.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
20.
Are forces balanced or unbalanced when a marble rolls down a ramp?
a)
Balanced
b)
Unbalanced
21.
A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?
a)
The cart will speed up.
b)
The cart will slow down.
c)
The cart will move at a constant speed in a straight line.
d)
The cart will fly to never never land!
22.

When forces are acting in the same direction they should be added together.

a)

True

b)

False

23.

Forces that are acting in opposite directions should be subtracted from each other.

a)

True

b)

False

24.

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.

25.

If the net force is not 0, _____

a)

the forces are not balanced.

b)

the object changes what it is doing.

c)

the object changes its velocity.

d)

the object accelerates.

26.

The net force (Fnet) and the acceleration are always in the same direction.

a)

True

b)

False

27.

If the acceleration and velocity are in the same direction the object will _____.

a)

speed up

b)

slow down

c)

turn

28.

If the acceleration and the velocity are in opposite directions, the object will _____.

a)

speed up

b)

slow down

c)

turn

29.

The net force (Fnet) acting on the object is (a)   N.

30.
A force of attraction between 2 object that is directly related to mass and indirectly related to distance.
a)
mass
b)
weight
c)
gravity
d)
kilogram
31.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
32.
As the distance between 2 objects increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
33.
Which of the following will not change in different gravitational fields?
a)
wieght
b)
force
c)
mass
d)
pounds
34.
Which of the following will change with different gravitational forces?
a)
mass
b)
amount of matter in an object
c)
weight
d)
kilograms
35.
What would happen to your weight if Earth's mass was cut in half?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
increase because gravitational force decreases
36.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
37.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
38.
Which diagram shows a planet with the least eccentric orbit?
a)
1
b)
2
c)
3
d)
4
39.
A planet moves __________ when it is farthest from the sun.
a)
faster
b)
slower
40.
What has an eccentricity of zero
a)
a straight line
b)
a large ellipse
c)
a circle
d)
a small ellipse
41.
Planets orbit the Sun in a shape called a(n)
a)
circle
b)
ellipse
c)
focus
d)
perihelion
42.

If an object has more _______, it will have more gravitational force.

a)

mass

b)

distance

43.
Where is the planet moving faster
a)
Position A to B
b)
Position B to C
c)
Position H to I
d)
Position I to J
44.
When the distance from an object is doubled, the force of gravity drops by a factor of _____
a)
2
b)
4
c)
10
d)
16
45.
Go 3 times farther away and the force of gravity drops by _____
a)
3 times
b)
6 times
c)
9 times
d)
12 times
46.
If there are no other forces acting on them, two objects with mass will _____
a)
repel
b)
stay where they are
c)
move uniformly toward each other
d)
accelerate toward each other
47.
In order to break free of a planet's gravity, an object must be moving faster than the _____
a)
escape velocity
b)
getaway acceleration
c)
break-away pace
d)
liberation altitude
48.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
kg/ m2
49.
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
50.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
51.
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
52.
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
53.
The units for Impulse are
a)
N/s
b)
N.s
c)
N
d)
m/s
54.
Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds.  Which cart experiences the greatest impulse?
a)
Cart B
b)
Cart A
c)
they are the same
55.
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.
a)
1 N.s
b)
6 N.s
c)
66 N.s 
d)
None of these
56.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
57.

In an isolated system, the net ____ on that system is zero.

a)

external force

b)

internal force

c)

time interval

d)

displacement

58.
The impulse-momentum theorem states that
a)
the impulse on an object is equal to the change in momentum it causes 
b)
the force on a moving object is equal to the magnitude of the impulse.
c)
the impulse on an object is greater than the change in momentum it causes 
d)
the impulse on an object is less than the change in momentum it causes
59.
A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the     change in the object's velocity? 
a)
6.3 m/s
b)
3.2 m/s
c)
1.2 m/s 
d)
4.33 m/s
60.
If an air bag changes a 60 kg person's speed from 40.0 m/s to     0.0 m/s, what impulse must act on the person? 
a)
 2400 kg.m/s
b)
1.5 kg.m/s
c)
0.67 kg.m/s
d)
1500 kg.m/s
61.
The velocity of a 975-kg car is changed from 12.0 m/s to 27.0 m/s in 15s by an external, constant force. What is the magnitude of the force? 
a)
9.75×102 N
b)
1.46×104 N
c)
9.75×103 N
d)
975 kg·m/s
62.
A force acted upon an object for 3 s as shown in the graph below.
 What is the magnitude of the impulse on the object?
a)
3
b)
4.5
c)
6
d)
9
63.
what is the objects momentum for 8 m/s
a)
6
b)
8
c)
10
d)
12
64.
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
65.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
66.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
67.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
68.
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
a)
Skater 1 experiences a greater change in momentum
b)
Skater 2 experiences a greater change in momentum
c)
Skater 1 has a greater velocity than Skater 2
d)
Skater 1 experiences a greater force
69.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

The total momentum before a collision is greater than the total momentum after a collision.

c)

The total momentum before a collision is less than the total momentum after a collision.

d)

The total momentum before a collision is not related to the total momentum after a collision.

70.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
71.

What is the unit of impulse?

a)

N/s

b)

Kg.m/s

c)

N.s

d)

Kg.m/s and N.s

e)

None of the above

72.

Definition of impulse:

a)

The time integral of net force that causes Change in momentum

b)

The product of mass and velocity

c)

The ability to do work

d)

the rate of increase of speed or the rate of change of velocity

73.

The air bag on a car reduces the force experienced by the driver, by extending the time of impact.

a)

True

b)

False

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