Unit 4: Energy Review

Front

What happens to the speed of a ball when it is thrown in the air?

Back

The speed decreases as it rises and increases as it falls.

Front

How do you calculate work done?

Back

Work done (Joules) = Force (Newtons) x Distance (meters).

Front

If you complete 50J of work while pulling a 25N sled, how far did you travel?

Back

2 meters.

Front

What is Gravitational Potential Energy?

Back

The energy an object possesses due to its height above the ground.

Front

If an object has 100 J of Gravitational Potential Energy at the top, how much Kinetic Energy does it have at the lowest point?

Back

100 J.

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move.

Front

Which of the following is an example of work being done?

Back

Lifting a box.

Front

If you walk for one mile and then two miles, how does the work done compare?

Back

You did twice as much work because you walked twice as far.

Front

What is Kinetic Energy?

Back

The energy an object has due to its motion.

Front

What is the formula for Kinetic Energy?

Back

Kinetic Energy (KE) = 0.5 x mass (kg) x velocity² (m/s²).