WorksheetsNewton's Law of Motion
Total questions: 91
Worksheet time: 2hrs 41mins
Name
Class
Date
1.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
2.
The SI units for force are...
a)
Kilograms
b)
Newtons
c)
Meters per second
d)
Pounds
3.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
4.
A crumpled piece of paper hits the ground before a flat sheet of paper because
a)
the acceleration of gravity is greater on the crumpled paper.
b)
there is more air resistance against the flat paper.
c)
the crumpled paper is more massive
d)
the crumpled paper is less massive.
5.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
6.
A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?
a)
His direction changed.
b)
His direction was unchanged.
c)
His speed increased.
d)
His speed decreased.
7.
How does Newton’s third law explain how a rocket takes off?
a)
The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same.
b)
The rocket is at rest until ignition.
c)
The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
8.
Acceleration is caused by a force acting on a mass.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
9.
For a force on an object there is an equal and opposite force.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
10.
Without any force to change it, an object at rest stays at rest and an object in motion stays in motion
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
11.
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
12.
A student pushes a box to right with a force of 10N while a young boy pushes the box to the left with a force of 8N. What is the sum of all forces on the box?
a)
18N left
b)
18N right
c)
2N right
d)
2N left
13.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
14.
If net force acting on object is 0, then the force is considered to be..
a)
Balanced
b)
Unbalanced
c)
Equal in Direction
d)
Distance/Time
15.
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
16.
Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?
a)
first
b)
second
c)
third
d)
fourth
17.
A person is pushed forward into their seat belt when a car stops. Which law is this?
a)
1st
b)
2nd
c)
2 and 3
d)
3rd
18.
Which law is this picture illustrating?
a)
Law 1
b)
Law 2
c)
Law 3
19.
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
20.
What is the formula for the 2nd law of motion?
a)
a=lw
b)
F=m/a
c)
F=ma
21.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
There is no such thing as force
22.
What pulls a ball back to earth?
a)
Gas
b)
Friction
c)
Gravity
d)
Molecules
23.
Which law best describes a satellite orbiting the earth?
a)
Law of Inertia
b)
Law of Mass and Acceleration
c)
Law of Action Reaction
24.
A _______ is a push or pull.
a)
Newton
b)
Acceleration
c)
Momentum
d)
Force
25.
Which has more inertia--
a)
Truck
b)
Cat
c)
Ant
d)
Skateboard
26.
How many laws of motion does Newton have?
a)
One
b)
Two
c)
Three
d)
Four
27.
1000 kg is the -----
a)
Force
b)
Mass
c)
Acceleration
d)
Weight
28.
45 meters per second squared is the--
a)
Acceleration
b)
Mass
c)
Weight
d)
Force
29.
If an object is stationary (not moving) the forces acting upon it are---
a)
Balanced
b)
Unbalanced
c)
Weak
d)
Hulk Smash?
30.
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
31.
Newton's Third Law says that forces must always occur in _____.
a)
pairs
b)
groups of 20 or more
c)
individual circumstances
d)
friction
32.
Force and acceleration have
a)
a direct relationship
b)
an inverse relationship
33.
When you double the mass the acceleration
a)
decreases by 1/2
b)
doubles
c)
triples
d)
decreases by 1/3
34.
When you double the force the acceleration
a)
decreases by 1/2
b)
doubles
c)
triples
d)
decreases by 1/3
35.
When you triple the mass the acceleration
a)
decreases by 1/2
b)
doubles
c)
triples
d)
decreases by 1/3
36.
Mass and acceleration have
a)
a direct relationship
b)
an inverse relationship
37.
Based on Newton's Law of Force Pairs, what would be the reaction force, if the action force is 60 N to the right?
a)
60 N to the right
b)
60 N to the left
c)
30 N to the left
d)
9.8 N to the right
38.
Calculate the acceleration of the tire in the diagram.
a)
5.3 m/s2
b)
0.2 m/s2
c)
12.0 m/s2
d)
9.8 m/s2
39.
A man hits a 0.2 kg golf ball causing it to accelerate at rate of 20 m/s2. Calculate the force used on the golf ball.
a)
4 N
b)
100 N
c)
0.01 N
d)
20.2 N
40.
A force of 560 N is needed to produce an acceleration of 20 m/s2. What is the mass of the accelerated body?
a)
28 kg
b)
11200 kg
c)
0.04 kg
d)
580 kg
41.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
42.
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
43.
A bike accelerates at 10 m/s2 when a force of 50N is applied. What is the mass of the bike and its rider?
a)
25 kg
b)
200 kg
c)
20 kg
d)
5 kg
44.
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.
45.
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
46.
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
47.
You are holding a bowl of hot soup while standing in the kitchen. As you begin to move, the soup spills out of the bowl. Upon reflection you realize that
a)
the soup spilled because of air resistance
b)
if you had traveled faster this wouldn't have happened
c)
the soup wanted to stay where it was, but you moved the bowl
d)
the soup and the bowl act as one body with the same velocity
48.
Why do you lean towards the left when a car turns right
a)
because of inertia
b)
because of gravity
c)
because of buoyancy
d)
because of velocity
49.
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
50.
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
51.
The resultant force on the box is
a)
2 Newtons to the left
b)
10 Newtons to the right
c)
10 Newtons to the left
d)
20 Newtons to the right
52.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
53.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
54.
When most objects with smooth surfaces rub, there is less friction.
a)
True
b)
False
55.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
56.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
57.
Which of the following answers is the most scientific answer for the question:
What is friction?
a)
The random force between two solids, liquids, or gases.
b)
The contact force between two solids, liquids, or gases that slide past one another.
c)
The thing that creates static electricity
d)
A force that is random
58.
Which of the following is NOT an example of friction?
a)
using the brakes on your bike to slow you down
b)
putting your hand out the window
c)
a satellite traveling through deep space
d)
a hockey puck going across an ice rink
59.
This car is turning, but there’s a puddle of water in the road. Which diagram best shows how the puddle will affect the path of the car after it hits the puddle?
a)
b)
c)
d)
60.
Which of the following statements is false?
a)
Friction can only slow things down
b)
Friction is never useful
c)
Friction can stop things from moving
61.
Movers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?
What helps slow the box as it slides to the bottom of the ramp?
a)
friction
b)
gravity
c)
inertia
d)
magnetism
62.
Only solids can produce friction
a)
true
b)
false
63.
What is acceleration?
a)
transfer of energy to an object
b)
going faster
c)
a change in velocity (speed, direction, or both)
d)
an object remaining in motion or at rest until something changes it
64.
The motion of an object will change when an unbalanced force is applied to it
a)
true
b)
false
65.
What are the units on the coefficient of friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
66.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
67.
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
68.
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
69.
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
70.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
71.
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.
72.
When two surfaces rub, the irregularities of one surface get caught on those of the other surface?
a)
True
b)
False
73.
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
74.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
75.
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
76.
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
77.
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
78.
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
79.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
80.
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.
Calculate the impulse on the ball.
a)
1 N*s
b)
6 N*s
c)
33.3 N*s
d)
None of these
81.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than
b)
less than
c)
equal to
d)
unrelated to
82.
Which of the following has the greatest momentum?
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
83.
What is the unit for velocity?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
84.
What is the unit for momentum?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
85.
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
86.
Momentum is the product of mass and velocity
a)
TRUE
b)
FALSE
88.
An object with a mass of 2000 kg at rest has what momentum?
a)
2000 kg m/sec
b)
0 kg m/sec
c)
2000 kg
d)
2000 m/sec
88.
An object with a mass of 2000 kg at rest has what momentum?
a)
2000 kg m/sec
b)
0 kg m/sec
c)
2000 kg
d)
2000 m/sec
89.
A 2 kg cart has a momentum of 10 kg m/s. What is its velocity?
a)
22 m/s
b)
.2 m/s
c)
5.0 m/s
d)
20 m/s
90.
A car is of mass 15kg is travelling east at a velocity of 3m/s. the value of its momentum is:
a)
30kg.m.s-1
b)
45kg.m.s-1
c)
18kg.m.s-1
d)
5kg.m.s-1
91.
If you double the velocity of an object, then its momentum will ______________.
a)
will double
b)
will half
c)
will quadruple (x4)
d)
will be quartered (x 1/4)
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