6.4 Gravity and Freefall

Front

What is the acceleration due to gravity on Earth?

Back

9.8 m/s²

Front

What does the letter 'g' signify in physics?

Back

Acceleration due to gravity.

Front

What type of acceleration is experienced by an object in freefall?

Back

Downward acceleration.

Front

How much does the speed of a freely falling object increase each second?

Back

About 10 m/s.

Front

If a ball is dropped from a height, what happens to its velocity as it falls?

Back

It increases at a uniform rate.

Front

What is the formula to calculate the velocity of a freely falling object?

Back

v = gt, where g is the acceleration due to gravity.

Front

If a ball is dropped from a height and takes 3 seconds to reach the ground, what is its velocity upon impact?

Back

29.4 m/s.

Front

What is the velocity of a ball at the highest point when thrown straight up?

Back

0.0 m/s.

Front

What happens to the speed of a falling object every second?

Back

It increases by approximately 10 m/s.

Front

What is the effect of air resistance on a freely falling object?

Back

It opposes the motion and can reduce acceleration.