What is the SI unit of energy?

Joule
Watt
Newton
Pascal

Work is calculated as:

Velocity x Mass
Mass x Acceleration
Power x Time
Force x Distance

If a force of 10 N moves an object 3 m, how much work is done?

30 J
13 J
7 J
100 J

Which of the following is an example of kinetic energy?

A moving car
A rock on a hill
A stretched spring
A compressed rubber band

Potential energy depends on:

Velocity only
Mass and height
Time only
Acceleration only

Power is defined as:

Work done per unit time
Force x Distance
Energy x Mass
Velocity x Acceleration

What is the SI unit of power?

Watt
Joule
Newton
Pascal

Which of the following is a renewable energy source?

Natural gas
Coal
Petroleum
Solar energy

Mechanical energy is the sum of:

Force + Mass
Work + Power
Kinetic energy + Potential energy
Velocity + Acceleration

If 100 J of work is done in 5 seconds, what is the power?

20 W
50 W
10 W
5 W