Bennett Mechanical Test Velocity and Gravity 3

Question 1

Why does a feather fall slower than a rock in normal air?

Accepted Answer

Air resistance affects the feather more

Answer

Gravity is weaker on the feather

Answer

The feather has less mass attraction

Answer

The rock is denser so gravity is stronger

Question 2

A rock falls for 2 seconds. About how far does it travel (ignoring air resistance)?

Accepted Answer

About 20 meters

Answer

About 5 meters

Answer

About 10 meters

Answer

About 40 meters

Question 3

On the Moon, where gravity is about 1/6 of Earth's, a dropped object will fall how compared to Earth?

Accepted Answer

Slower

Answer

Faster

Answer

At the same rate

Answer

It will not fall

Question 4

An object moving at constant velocity has what acceleration?

Accepted Answer

Zero

Answer

Positive

Answer

Negative

Answer

Equal to gravity

Question 5

Which has greater velocity: a 10 kg ball at 5 m/s or a 2 kg ball at 5 m/s?

Accepted Answer

They have equal velocity

Answer

The 10 kg ball

Answer

The 2 kg ball

Answer

Cannot be determined

Question 6

A projectile launched horizontally and a ball dropped at the same instant will land when?

Accepted Answer

They land at the same time

Answer

The dropped ball lands first

Answer

The projectile lands first

Answer

Neither lands

Question 7

What happens to the velocity of a falling object as it continues to fall (ignoring air resistance)?

Accepted Answer

It increases steadily

Answer

It stays constant

Answer

It decreases steadily

Answer

It becomes zero