Question

Mass 2 kg kinetic energy 64 J calculate the speed

Answer 1

64 J = 2 × v^2× 0.5

v^2 = 64 ÷1

v=8

speed is 8 meter per second

Answer 2

Mass= 2 kg

Kinetic energy=64 j

Speed ?

We know

K.E= 1/2 mv2

64=1/2 ×2 v2

V = 8 m/s