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Name ____________________________________________
Period ___________
Newton’s Laws & Potential/Kinetic Energy Quiz Review
Complete the following table.
Term
Definition
Example from Real Life
1. acceleration
The rate at which velocity
changes over time.
A car accelerates as it
takes off from a stop.
2. centripetal force
Any force that keeps an
object moving in a circle.
The boy goes in a circle on
a merri-go-round.
3. Force
A push or a pull: something
that changes the motion of
an object.
The resistance of an object
to a change in the speed or
the direction of its motion.
A measure of how much
matter an object is made of.
The pull of a handle on a
wagon.
The overall force acting on
an object when all of the
forces acting on it are
combined.
Objects at rest remain at
rest, and objects in motion
remain in motion unless
acted on by an unbalanced
force.
The acceleration of an
object increases with
increased force and
decreased with increased
mass.
Every time an object exerts
a force on another object,
the second object exerts a
force that is equal in size
and opposite in direction
back on the first object.
An object is being pulled to
the left with 4N, to the right
with 2N – the net force is 2N
to the left.
A soccer ball will stay where
it is unless it is kicked.
4. inertia
5. mass
6. net force
7. Newton’s first law
8. Newton’s second
law
9. Newton’s third law
A heavier object has more
inertia than a smaller one
because it has more mass.
The box has a mass of 10
kg.
You need to push a
shopping cart with more
force to make it move if it is
full.
When you’re walking, you
push backward on the
ground, and the ground
pushes you forward with
equal force.
10. Newton’s second law states that to increase acceleration, you
_______________increase force or decrease mass_______________________________
11. What units are used to measure force? ________Newtons_________
12. A wagon is pulled down a hill with a constant velocity. All the forces on the
wagon are ________________balanced__________________________
Newton’s Laws and Potential/Kinetic Energy Quiz Review
Name ____________________________________________
Period ___________
13. An action force and its reaction force are __equal_______ in size and
____opposite_____ in direction.
14. John pulls a box with a force of 4 N, and Jason pulls the box from the opposite
side with a force of 3 N. Ignore friction. In which direction, and with how much
force would the box move?
-
The box will be pulled towards John with a force of 1 N
15. List the objects in order from the object with least inertia to the object with the
most inertia: Feather, large rock, pencil, book. Explain your reasoning.
(Least) Feather, pencil, book, rock (Most)
- The more mass an object has, the more inertia it has.
16. Explain how an object can have forces acting on it but not be accelerating.
If the forces are balanced, then the object will not move.
17. What force should Lori apply to a 5 kg. box to give it an acceleration of 2 m/s 2?
Use f = m x a
F=mxa
F = 5 kg x 2 m/s2
F = 10 N
18. If a 10 N force accelerates an object 5 m/s2, how massive is the object?
Use f = m x a
M = f/a
M = 10 N / 5 m/s2
M = 2 kg
19. Ravi applies a force of 5 N to a wagon with a mass of 10 kg. What is the wagon’s
acceleration?
Use f = m x a
A = f/m
A = 5 N / 10 kg
A = .5 m/s2
Kinetic vs. Potential Energy
20. A skier is on a tall mountain.
a. Where does she have the greatest potential energy?
At the top of the mountain
b. Where does she have the greatest kinetic energy?
At the bottom of the mountain
Newton’s Laws and Potential/Kinetic Energy Quiz Review