Work and Energy

what is the unit of work?

what is the formula needed to solve for work?

if you push a cart with a force of 60 N for 2 m... how much work have you done

Two people shove on a wall with 100 N. The wall doesn’t move. How much work is done?

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has she done?

50 J of work is done lifting a 20.0 N book in the air. How high was it lifted?

A golf pro swings his driver with a mass of 0.75 kg at a velocity of 60 m/s. What is the kinetic energy of the club?

Determine the potential energy of a 5 N book that is moved to three different shelves on a bookcase. The height of each shelf is 1 m, 1.5 m, and 2.0 m.

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. What is the KE of the car?

An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy (gravity = 9.8 m/s²) of the apple?

A golf ball has a mass of 0.046 kg. It is dropped and has 1.1 J of gravitational potential energy (gravity = 9.8 m/s²). What height was it dropped from?

Newtons are the correct unit for which of the following?

Which is the correct unit for work?

What is the correct unit for power?

What is the power of a kitchen blender if it can perform 3,750 Joules of work in 15 seconds?

How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in five seconds? (Hint: Solve for work first. This is a 2-step problem.)

It took 50 Joules to push a chair 5 meters across the floor. With what force was the chair pushed?

A force of 100 Newtons was necessary to lift a rock. A total of 150 Joules of work was done. How far was the rock lifted?

A monkey weighing 50 N climbed a height of 3 m up a tree in 20 s.

Calculate power needed by the monkey