Question

a mass of 3kg is moving with velocity of 18km per hr calculate kinetic energy of the mass in joule

Answer 1

$1 \div 2 \times 3 \times 18 \times 18$

Answer 2

kinetic energy
=(1/2)×mass×(velocity in m/sec)^2
=(1/2)×3×(18×5/18)^2
=(1/2)×3×5^2
=(1/2)×3×25
=75/2
37.5