Energy and Forces Quiz

Nash pushes a box to the right applying a force of 100 N. Gab pushes the same object going to the left applying force of 40 N. What is the net force acting on this object?

In which of the following do we find the kinetic energy?

• in a rolling ball

• in a stationary object

• in a compressed spring

Potential energy is also called stored energy. It can be calculated using the formula PE=mgh. Which of following is the correct unit for potential energy?

• Joules

• Watts

• Newtons

Of the formula given below, which one is best to use when calculating for the kinetic energy possess by an object?

• KE = ½ mv²

• PE = mgh

• F = ma

Which of the following is present in a rolling boulder?

• kinetic energy

• potential energy

• thermal energy

What happens to energy when an object is being raised?

Vehicle A has a mass of 1000 kg and a speed of 60 km/h, and vehicle B has a mass of 2000 kg and a speed of 30 km/h. Which is the kinetic energy exerted by vehicle A?

• twice that of car B

• the same as car B

• less than car B

A 12 kg cat who is resting on a tree has a potential energy of 50 J. Calculate its position (height) relative to the ground.

All of the following factors affect potential and kinetic energy EXCEPT one. Which is it?

• volume

• mass

• height

Which of the following factors affect the amount of kinetic energy of an object?

• mass and speed

• volume and temperature

• shape and size