PSQ: Work Power and Energy

Front

Stored energy or energy due to its position is called

Back

Potential energy

Front

What is kinetic energy?

Back

Energy of an object in motion.

Front

If you push a cart with a force of 60 N for 2 m, how much work have you done?

Back

120 J

Front

Which of the following situations demonstrates kinetic energy? A lamp that is turned off, A bike parked at the top of a hill, Captain Kirk throwing a boulder at Gorn!, Fallen leaves laying on the ground below a tree.

Back

Captain Kirk throwing a boulder at Gorn!

Front

A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy?

Back

22,584 Joules

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is mechanical energy?

Back

The sum of potential and kinetic energy in an object.

Front

What is the unit of energy?

Back

Joule (J)

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy.

Front

What is the formula for kinetic energy?

Back

Kinetic Energy = 1/2 mv² (where m is mass and v is velocity)