How can we describe motion in terms of energy transfers? - OCR 21C

1

Which is a correct example of work being done?

2

What are the correct units for work?

3

How much work is done by a 10 N force pushing a box 4 m across the floor?

4

If a motor does 500 J of work to lift a 200 N weight, how high was the weight lifted?

5

What is the gravitational potential energy stored in a 60 kg child sitting at the top of a 2 m high slide? (g = 10 N/kg)

6

What is the name of the energy stored by a moving object?

7

What is the main energy transfer for an apple falling from a tree?

8

Which of the following is a definition of power?

9

A hairdryer transforms 10,000 J of energy in 4 s. What is its power?

10

A 60 W lamp is left on for 20 s. How much energy has been transformed?