Question

A 600kg car is at rest , and then accelerates to 5n/s what is the original kinetic energy?

Answer 1

M = 600 kg
u = 0 (as the car was at rest initially)
v = 5 m/s
Initial kinetic energy = ½mu²
= ½×600×0
= 0
Final kinetic energy = ½mv²
= ½×600×25
= 7500 J