A rock falls off a table and lands on a spring, squishing it. What is the energy transformation?

What is the kinetic energy of a 12 kg dog running at 3 m/s?

How much work is needed to push a resting 20 kg crate to a velocity of 5 m/s?

50 J of work is done lifting a 2.0 kg book in the air. How high was it lifted?

How much energy is used by a 100 W light bulb over 1 hour? (be sure to convert to seconds first)

A bike goes from 0 m/s to 12 m/s in a time of 4 seconds. What was its acceleration?

A car goes from 0 m/s to 8 m/s in a distance of 100 m. What is the car's acceleration?

Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who did more work?

Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who used more power?

A 0.300 kg orange falls off a 1.2 m high table. How much kinetic energy does the orange have when it reaches the ground?

A pendulum has 10 J of gravitational potential energy at its highest point. How much kinetic energy does it have at its lowest point?

At one point, a falling apple has 2 J of gravitational potential energy and 7 J of kinetic energy. How much kinetic energy does it have when it hits the ground?

A 4 kg ball is at rest on a 2.5 m high shelf. The ball falls off the shelf. How fast is the ball moving when it hits the ground?

A solar panel is connected to a lamp. Does the panel do positive or negative work on the lamp?

A horse pulls a cart from rest to 3 m/s. Does the horse do positive or negative work on the cart?

A box slides from 12 m/s to 6 m/s across a carpet. Does the carpet do positive or negative work on the box?

A 25 kg cart in moving at 15 m/s when it hits a rough road and then slides to a stop in 30 m. What is the acceleration of the cart?

What is the unit for energy?