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Forces, Motion and Energy Chapter 2 Test



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 

A feather and a rock dropped at the same time from the same height would land at the same time when dropped
a.
by Galileo in Italy
c.
by an astronaut on the moon.
b.
by Newton in England.
d.
by an astronaut on the space shuttle.
 

2. 

Newton’s first law of motion applies
a.
to moving objects.
c.
to objects that are accelerating.
b.
to objects that are not moving.
d.
Both (a) and (b)
 

3. 

A golf ball and a bowling ball are moving at the same velocity. Which has more momentum?
a.
the golf ball, because it has less mass
b.
the bowling ball, because it has more mass
c.
They both have the same momentum because they have the same velocity.
d.
There is no way to know without additional information.
 

4. 

If three balls of different materials were dropped at the same time from the same height, which would hit the ground first? (Assume there is no air resistance.)
a.
a tennis ball
c.
a solid steel ball
b.
a solid rubber ball
d.
They would all hit at the same time.
 

5. 

Orbital motion is a combination of forward motion and
a.
frictional resistance.
c.
horizontal acceleration.
b.
free fall.
d.
weightlessness.
 

6. 

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.
c.
transfer its energy to another object.
b.
eventually come to a stop.
d.
accelerate in the absence of friction.
 

7. 

Air resistance is
a.
sliding friction.
c.
fluid friction.
b.
rolling friction.
d.
static friction.
 

8. 

The amount of air resistance acting on an object depends on the object's
a.
size and shape.
c.
density and mass.
b.
mass and weight.
d.
None of the above
 

9. 

Parachutes slow skydivers to a safer terminal velocity because parachutes
a.
increase air resistance.
c.
increase gravitational pull.
b.
decrease air resistance.
d.
decrease gravitational pull.
 

10. 

Astronauts float inside the space shuttle because they
a.
are massless.
b.
have no gravitational force acting on them.
c.
are in free fall.
d.
are weightless.
 

11. 

Newton's third law of motion states that if a force is exerted on an object, another force occurs that
a.
is equal in size and opposite in direction.
b.
is in the same direction and size.
c.
is equal in speed and opposite in direction.
d.
is in the same direction and speed.
 
 
You have four vehicles, all driving at the same velocity side-by-side on a four-lane highway. They are a fully-loaded truck, an empty truck, a midsize van, and a small car.
 

12. 

Which one has the MOST momentum?
a.
the fully-loaded truck
c.
the midsize van
b.
the empty truck
d.
the small car
 

13. 

Inertia is used when explaining Newton's
a.
first law of motion.
c.
third law of motion.
b.
second law of motion.
d.
law of conservation of momentum.
 

14. 

After a motor pulls the roller coaster cars up the first hill, what keeps the cars moving up and over the following hills, turns, and loops?
a.
gravity
c.
acceleration
b.
inertia
d.
all of the above
 

15. 

Catapults create
a.
free fall.
c.
projectile motion.
b.
orbiting.
d.
gravitational force.
 

16. 

Because of projectile motion, when aiming at a target you should always aim
a.
above the bull's eye.
c.
to the left of the bull's eye.
b.
below the bull's eye.
d.
to the right of the bull's eye.
 

17. 

If a car driver suddenly makes a sharp turn, the passenger slides to the side of the car because of
a.
inertia.
c.
gravity.
b.
free fall.
d.
friction.
 

18. 

When you bump into someone standing still, you can knock them over because of
a.
projectile motion.
c.
gravity.
b.
momentum.
d.
friction.
 

19. 

The curved path traveled by a thrown baseball is known as
a.
orbiting.
c.
projectile motion.
b.
centripetal acceleration.
d.
centripetal force.
 

20. 

Orbiting objects appear to be weightless because they are
a.
in free fall.
c.
outside of Earth's atmosphere.
b.
weightless.
d.
in space.
 



 
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