Name: 
 

Test Motion and Force



 

 1. 

As a moving object's velocity decreases, its momentum decreases.

 

 2. 

If you are driving up a curvy mountain road, your displacement would be greater than your distance.

 

 3. 

Earth exerts an unbalanced force on a ball thrown into the air.

 

 4. 

Balanced forces acting on an object cause the object to accelerate.

 

 5. 

Forces that are equal in size but opposite in direction are called unbalanced forces.

 

 6. 

A line on a speed-time graph with a steep slope indicates a greater speed.

 

 7. 

Friction is a force that speeds up motion between two surfaces that are in contact.

 

 8. 

Motion is a change in direction.

 

 9. 

A falling leaf has less momentum than a pile of leaves on the ground.

 

 10. 

Cars, airplane wings, and bike helmets are built in a streamlined shape to reduce inertia.

 

 11. 

If two objects collide they each have the same momentum as they had before the collision.

 

 

 12. 

A 10-kg object has a momentum of 50 kg m/s. Its velocity is ____.
a.
5 m/s
b.
10 m/s
c.
5 m/s2
d.
500 m/s
 

 13. 

Speed is the rate of change in ____.
a.
velocity
b.
time
c.
direction
d.
distance
 

 14. 

An object’s inertia depends on its ____.
a.
gravity
b.
weight
c.
mass
d.
momentum
 

 15. 

When a toy truck collides into a toy car, the momentum of ____ is the same before and after the collision.
a.
the car
c.
the truck
b.
the truck plus the car
d.
the truck times the car
 

 16. 

In order to be ____ forces, their effects must cancel each other out and not cause a change in an object’s motion.
a.
balanced
b.
strong
c.
weak
d.
normal
 

 17. 

Momentum is a measure of ____.
a.
the amount of matter in an object
b.
the tendency of an object to change its motion
c.
how hard it is to stop an object
d.
the amount of force acting on an object
 

 18. 

Momentum depends on ____ and ____.
a.
mass, weight
c.
mass, velocity
b.
weight, inertia
d.
velocity, weight
 

 19. 

If gravity did not affect the path of a horizontally thrown ball, the ball would ____.
a.
go straight up
c.
follow a curved path
b.
fall straight down
d.
travel horizontally
 

 20. 

The upward force on an object falling through the air is ____.
a.
air resistance
c.
terminal velocity
b.
gravity
d.
inertia
 

 21. 

Air resistance ____ as you move faster.
a.
eventually disappears
c.
remains the same
b.
increases
d.
decreases
 

 22. 

When you graph the motion of an object, you put ____ on the horizontal axis and ____ on the vertical axis.
a.
time, distance
c.
time, speed
b.
distance, time
d.
speed, time
 

 23. 

Inertia ____.
a.
depends on direction
c.
resists a change in motion of an object
b.
depends on momentum
d.
both a and b
 

 24. 

The speed an object reaches when the force of gravity is balanced by the force of air resistance is called ____.
a.
terminal velocity
c.
acceleration
b.
balanced velocity
d.
free fall
 

 25. 

The gravitational force of any object near Earth’s surface is ____.
a.
unknown
c.
Newton’s first law
b.
friction
d.
9.8m/s2
 

 26. 

A ____ force is the total force felt by an object.
a.
balanced
b.
strong
c.
net
d.
sum
 

 27. 

If you exert a force on an object in motion you will change its ____.
a.
mass
b.
weight
c.
inertia
d.
momentum
 

 28. 

A feather falls through the air more slowly than a brick because of ____.
a.
gravity
b.
inertia
c.
momentum
d.
air resistance
 

 29. 

Two km south is a measure of ____.
a.
distance
b.
displacement
c.
velocity
d.
acceleration
 

 30. 

The distance traveled divided by the time taken to travel the distance is ____.
a.
velocity
c.
speed
b.
momentum
d.
mass
 

 31. 

A(n) ____ is a push or a pull.
a.
acceleration
b.
force
c.
momentum
d.
newton
 

 32. 

____ is the rubbing force that acts against motion between two touching surfaces.
a.
Friction
b.
Acceleration
c.
Normal force
d.
Momentum
 

 
 
a.
reference point
d.
mass
b.
displacement
e.
gravity
c.
direction
 

 33. 

a vertical or horizontal descriptor of where something is moving toward
 

 34. 

the distance and direction between a starting and ending point
 

 35. 

the amount of matter in an object
 

 36. 

a position to compare movement against
 

 37. 

always an attractive force between two masses
 

 
 
nar001-1.jpg
 

 38. 

If after 30 minutes, her speed changed, how did it change?
a) she ran faster     b) she ran slower     c) it did not change
 

 39. 

How far had Celina traveled after 20 minutes of running?
a) 3 km           b) 6 km     c) 20 km     d) 2 km
 

 40. 

At 30 minutes into her run, what was Celina’s average speed?
a) 7.5 km/min     b) 7.5 km/hr     c.30 km/min      d) 0.13 km/min
 

 41. 

What was Celina’s doing at 45 minutes into her run?
a) running     b) walking   c) not moving   d) hopping on one foot
 



 
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