Question 1

What is work done?

Accepted Answer

he amount of energy transferred to an object that is being moved

Answer

The force needed to move an object

Answer

The amount of energy transferred to an object at rest

Answer

The distance an object can be moved

Question 2

What is the formula for work done?

Accepted Answer

W = F x d

Answer

W = F ⁄ d

Answer

W = d ⁄ F

Answer

F = W x d

Question 3

What are the units used for work done?

Accepted Answer

Joules

Answer

Coulombs

Answer

Amperes

Answer

Watts

Question 4

What is transferred when work is done?

Accepted Answer

Energy

Answer

Charge

Answer

Electrons

Answer

Voltage

Question 5

What is the formula for power?

Accepted Answer

P = E ⁄ t

Answer

E = P ⁄ t

Answer

P = E x t

Answer

P = t ⁄ E

Question 6

What are the units used for power?

Accepted Answer

Watts

Answer

Volts

Answer

Joules

Answer

Amperes

Question 7

What is the time taken to move an object if the total power used is 100W and the energy transferred by a force to the object is 1,000J?

Accepted Answer

10 seconds

Answer

0.1 seconds

Answer

100 seconds

Answer

1,000 seconds

Question 8

What is gravitational potential energy?

Accepted Answer

The energy an object has due to its position within a gravitational field

Answer

The strength of the gravitational field at the centre

Answer

The speed of an object due to the force of gravity

Answer

The energy an object radiates to other objects within a gravitational field

Question 9

What is the formula for gravitational potential energy?

Accepted Answer

Ep = m x g x h

Answer

Ep = g x h ⁄ m

Answer

Ep = h x m ⁄ g

Answer

Ep = m x h ⁄ g

Question 10

What is the Ep of a ball of mass 100g which is at a height of 1m above the Earth? (Note: The gravitational strength of the Earth is 9.81N/Kg.)

Accepted Answer

1J

Answer

0.1J

Answer

1N

Answer

1000J