What is the kinetic energy of a car that travels at a speed of 20 m/s and has a mass of 1200 kg?

Question

37369 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-11-06T13:14:36

#240000J#

I'm going to assume that by speed, you meant velocity.

The formula for KE is #KE = 1/2 mv^2#.
So input the values we know:

#KE = 1/2*1200*20^2#

#KE = (1200*400)/2#

#KE = 480000/2#

#KE = 240000#

The unit for energy is Joules(#J#) so the kinetic energy of the car is #240000J#