Forces and Motion Review

Front

Of the following, the greatest gravitational force would occur between which?

• a marble and a baseball 5 meters apart
• a loaded freighter on the high seas and Earth
• the moon and an astronaut standing on the moon
• the moon and Earth

Back

the moon and Earth

Front

The law that states that for every action force there is an equal and opposite reaction force is which?

Back

Newton’s third law of motion

Front

What is the unbalanced force that slows down a ball rolling across the floor?

Back

friction

Front

If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision?

Back

the law of conservation of momentum

Front

When gravitational forces and air resistance equalize on an object that is falling toward Earth and the object stops accelerating, what is the velocity of an object called?

Back

terminal velocity

Front

In the absence of air resistance, how would the acceleration of a 1.5 kg book and a 15 kg rock differ if dropped from the same height?

Back

They would not differ; they would be the same.

Front

What happens immediately after a sky diver opens her parachute?

Back

Air resistance greatly increases.

Front

Which statement illustrates Newton’s first law?

Back

All of the above

Front

Which object has the greatest inertia? a tennis ball, a bowling ball, a beach ball, a volleyball

Back

a bowling ball

Front

One newton is the force that can give a mass of 1 kg an acceleration of what?

Back

1 m/s/s.