Physics Review Exam

Change in position is called:

• Physics

• Gravity

• Motion

Speed is the rate of change of position over time, its formula is:

• Speed = Distance/Time

• Speed = Acceleration X Gravity

• Speed = Mass/Volume

Acceleration is the rate of change of velocity over time, its formula is:

• Acceleration = Change of Velocity/Time

• Acceleration = Mass X Gravity

• Acceleration = Mass/Volume

A horse travels 100 km in 4 hours.

What's its speed per hour?

• 25 km/h

• 50 km/h

• 75 km/h

A car travels 200 km in 4 hours.

What's its speed per hour?

• 25 km/h

• 50 km/h

• 75 km/h

A dolphin swam at 30 km/h for 3 hours.

What distance did it travel?

• 30 km

• 50 km

• 90 km

Whenever an object is tossed in freefall, its acceleration on planet Earth is:

• 9.8 m/s²

• 5 m/s

• 1.6 m/s²

Downward movement under the force of gravity only is called.

• Vertical throw

• Jumping

• Freefall

If we compare the gravity of Earth and the gravity of the Moon, we find that:

• They are equal.

• Earth's force of gravity is less.

• Moon's force of gravity is less.

If a feather and a bowling ball are dropped from the same height in vacuum (without air resistance), what happens?

• The feather hits the ground first.

• Both hit the ground at the same time.

• The bowling ball hits the ground first.