Question

A car of mass 900kg is traveling at 30m/s. Find the kinetic energy

Answer 1

Kinetic energy = 1/2m(v)²

= 1/2(900)(30)²

= 1/2(900)(900)

= 1/2(810000)

= 405000 J.

Answer 2

kinetic energy=1/2*m*v*v

m=900kg

v=30m/s

k.e=1/2*900*30*30j

405000kg-m2/sec2(joules)

405kj