WorksheetsPSH unit 6 section 3
Total questions: 71
Worksheet time: 2hrs 46mins
Name
Class
Date
1.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron?
a)
feathers
b)
iron
c)
same
d)
depends on their friction
2.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
3.
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.
4.
What is the standard unit force is measured in?
a)
Newtons
b)
pounds
c)
grams
d)
meters
5.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
6.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
7.
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
8.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
9.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law
c)
Newtons 3rd law
d)
Newtons 2nd law
10.
What is Newtons 2nd law of motion?
a)
Pancakes
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite re-action.
d)
Law of gravity
11.
What Newtons law does this picture represent
a)
Newtons 2nd law
b)
Law of gravity
c)
Newtons 1st law
d)
Newtons 5th law
12.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
13.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
14.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
15.
LT4: The graph shows Ashley riding her bike to Maria's house.
What is occurring from point A to point B?
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
16.
LT4: The graph shows Ashley riding her bike to Maria's house.
What was occurring from point B to point C?
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
17.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
c)
Newton's second law
18.
Newton's first law of motion states that __________.
a)
when a force is applied on an object, there is an equal force applied by the object in the opposite direction
b)
hen a force acts on an object, its acceleration is in the same direction as the force
c)
an object will remain at rest or keep moving with a constant velocity unless a force acts on it
d)
cceleration is calculated by dividing the force exerted on an object by the mass of the object
19.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
20.
A person is pushed forward into their seat belt when a car stops. Which law is this?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
21.
Which of Newton's laws are illustrated with a rocket launch?
a)
1st Law, the Law of Inertia.
b)
2nd Law, the Law of Acceleration.
c)
3rd Law, the Law of Action Reaction
d)
The Law of Conservation of Mass
22.
When the force on a car is doubled, the acceleration is doubled.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
23.
The harder you hit a baseball, the faster it accelerates.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
24.
You push against a wall and the wall is pushing back on you.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
25.
A sports car speeds up much faster than a dump truck when a traffic light turns from red to green. Which law is this?
a)
Law 1
b)
Law 2
c)
Law 3
26.
Which of the following has more inertia?
a)
Bowling ball
b)
Tennis ball
27.
If you double the mass of an object with the same force apply on it, the acceleration will
a)
double
b)
cut in half
c)
the same
d)
zero
28.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
29.
A book weighs 4 N. When held at rest in your hands, the net force on the book is
a)
0 N.
b)
0.4 N.
c)
4 N.
d)
39 N.
30.
A 20 kg bike accelerates at 10 m/s2. what was the net force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
31.
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
32.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's Law of Biology
33.
The tendency of an object to stay in motion or at rest is called
a)
velocity
b)
acceleration
c)
speed
d)
inertia
34.
What is the difference between mass and weight?
a)
mass is how much matter is in an object, and weight is the gravitational pull on that object
b)
mass and weight are the same
c)
weight affects how much mass is in an object
d)
weight is determined by how many atoms make up an object
35.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
36.
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
37.
Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?
a)
The mass of the car is greater than the mass of the basketballs
b)
The mass of the bowling balls is greater than the mass of the basketballs
c)
The van with the basketballs is bigger than the van with the bowling balls
d)
It should be equally as hard to push the two vans
38.
A wheelbarrow is experiencing two forces. One is pushing 5N east and another 5N west. What is true about the motion of the wheelbarrow?
a)
it isn't moving
b)
it is accelerating
c)
it is slowing down
d)
its speed is constant
39.
A 260.5N unbalanced force applied to push a chair across the room causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
62.02 kg
b)
63.69 kg
c)
263.3 kg
d)
1123.5 kg
40.
Which of the following has the greatest momentum?
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
41.
Which of the following is NOT a unit of momentum?
a)
kg*m/s
b)
N*s
c)
kg*mph
d)
kg*m/s2
42.
If a net force is acting on an object,
a)
its velocity must be constant
b)
its velocity must be changing
c)
its mass must be changing
d)
its acceleration = 0
43.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
44.
What happens to the speed of the wagon as the rain collects inside of it?
a)
it decreases
b)
it remains constant
c)
it increases
45.
The momentum of an object depends upon the object's ___________&_____________.
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
46.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
47.
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
48.
Determine the momentum of 1000-kg car moving southward at 20 m/s.........
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s south
d)
10000 kg * m/s south
49.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision. What is the velocity of the second ball after the collision?
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
50.
A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?
a)
18.6 m/s
b)
9.3 m/s
c)
7.5 m/s
d)
1.86 m/s
51.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than
b)
less than
c)
equal to
d)
unrelated to
52.
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
53.
What is the unit for mass?
a)
m/sec
b)
kg/sec
c)
kg
d)
kg m/sec
54.
What is the unit for velocity?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
55.
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
56.
Which object has more momentum?
a)
Baseball in the pitchers hand
b)
baseball, lost, in a messy room
c)
baseball in flight
d)
baseball in a catchers mitt
57.
Which object has more momentum?
a)
motorcycle at 15 mph?
b)
bike at 15 mph
c)
car at a stoplight
d)
runner at 10 mph
58.
If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?
a)
2400 m/s
b)
1.5 m/s
c)
240 m/s
d)
.67 m/s
59.
If an object has a velocity of 15 m/s and a momentum of 30 m/s, what is its mass?
a)
450 m/s
b)
2 m/s
c)
4,500 m/s
d)
.5 m/s
60.
What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
61.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
62.
The force that acts in the opposite direction of motion when two surfaces come in contact.
a)
Force
b)
Friction
c)
Static
d)
Kinetic
63.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
64.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
65.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
66.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity
67.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
68.
How would the absence of friction affect a marble traveling on a long, straight path?
a)
The marble’s speed would decrease.
b)
The marble’s speed would increase.
c)
The marble would stop immediately.
d)
The marble would remain at constant speed.
69.
If the mass of an object on Earth is 18 grams, what would the mass of the same object be on the Moon?
a)
18 g
b)
4 g
c)
0 g
d)
32 g
70.
If mass = 1.6 kg, weight on Earth =
a)
0.16 N
b)
15.7 kg
c)
15.7 N
d)
157 N
71.
If weight on Earth = 4.80 N, mass =
a)
32 kg
b)
0.49 kg
c)
47 kg
d)
0.49 N
100 %
