Kinetic and Potential Energy Flashcards
1
Q
What is the formula for kinetic energy?
A
KE= 1/2 x mass x speed2
2
Q
What is the formula for gravitational potential energy?
A
PE = mass x gravity x height
3
Q
What is the unit for energy?
A
Joules ( J )
4
Q
A model airplane has a mass of 3 kg and is travelling at 2 m/s. Calculate the kinetic energy the model airplane is storing?
A
6 J
5
Q
An athlete competing in the high jump jumps 3m. Calculate the gravitational potential energy gained by the athlete as they jump to this height. The mass of the athlete is 85kg. Give your answer to 2 significant figures
A
2500 J
6
Q
A ball has a mass of 2 kg, suppose it travels at 10m/s. Find the kinetic energy possessed by it.
A
