Bennett Mechanical Test Velocity and Gravity 2

Question 1

A ball is dropped from rest. Approximately how fast is it falling after 3 seconds (ignoring air resistance)?

Accepted Answer

About 30 m/s

Answer

About 10 m/s

Answer

About 20 m/s

Answer

About 90 m/s

Question 2

Two balls of different mass are dropped together in a vacuum. Which hits the ground first?

Accepted Answer

They land at the same time

Answer

The heavier ball

Answer

The lighter ball

Answer

The denser ball

Question 3

What is the difference between speed and velocity?

Accepted Answer

Velocity includes direction, speed does not

Answer

They are identical

Answer

Speed includes direction, velocity does not

Answer

Velocity is always larger

Question 4

A car travels 100 meters in 5 seconds at constant speed. What is its velocity?

Accepted Answer

20 m/s

Answer

5 m/s

Answer

50 m/s

Answer

500 m/s

Question 5

An object thrown straight up has what velocity at the highest point of its path?

Accepted Answer

Zero velocity

Answer

Maximum velocity

Answer

Constant downward velocity

Answer

Increasing velocity

Question 6

Gravity on Earth causes objects to accelerate at approximately what rate?

Accepted Answer

9.8 m/s²

Answer

1.6 m/s²

Answer

32 m/s²

Answer

100 m/s²

Question 7

If a runner increases speed from 2 m/s to 8 m/s in 3 seconds, what is the acceleration?

Accepted Answer

2 m/s²

Answer

1 m/s²

Answer

3 m/s²

Answer

6 m/s²