Question

Imagine a 10kg block moving with a velocity of 20m/s to the left.

Calculate the kinetic energy of this block.

Answer 1

Kinetic energy , KE= [1/2]m*v^2

m = 10 kg
v=20m/s

KE = [1/][(10kg)(20m/s)^2 = [1/2](10kg)(400m^2/s^2) = 2000 joule

Answer: 2000 joule