- A soccer ball takes 20 s to roll 10 m. What is the average speed of the soccer ball?
Your answer:
2 m/s
5 m/s
0.5 m/s
200 m/s
- When an object is at rest, what is its speed?
Your answer:
3 m/s
1 m/s
0 m/s
2 m/s
- Which describes how velocity changes with time?
Your answer:
average speed
inertia
acceleration
gravity
- A person in a head-on car collision who is not wearing a seat belt continues to move forward at the original speed of the car because of ____.
Your answer:
gravity
friction
inertia
weight
- If you want to calculate the acceleration of a car, you should ____ the change in speed of the car by the time interval.
Your answer:
add
subrtact
divide
multiply
- What is the term for speed at any instant in time?
Your answer:
average speed
instantaneous speed
constant speed
variable speed
- Newton’s first law of motion states that an object stays at rest unless a(n) ____ acts on it.
Your answer:
strong force
balanced force
gravitational force
unbalanced force
- Which one of the following objects has the greatest inertia?
Your answer:
golf ball
bowling ball
tennis ball
ping pong ball
- A force is which one of these?
Your answer:
a push
a pull
a push or pull
neither of these
- Force is measured in which units?
Your answer:
degrees
meters
grams
newtons
- A force is exerted on a box and an equal and opposite force is exerted by the box. What explains this?
Your answer:
Newton’s third law of motion
Newton’s first law of motion
Newton’s second law of motion
conservation of energy