Question

How are kinetic energy and momentum related? calculate the kinetic energy if an object having mass 20kg moving with velocity 54km/hr

Answer 1

change the velocity in m/s that is 15m/s
formula is KE=1/2mv^2
=1/2×20×15^2
10×225
2250J

Answer 2

$\bf{Relation\: b/w \:kinetic\: energy\: and \:momentum}$

=> Kinetic Energy, K. E. = 1/2 mv^2

2 K. E. = mv^2

mv = √ 2 K. E.

Momentum, p = mv

=> P = √ 2 K. E.

Mass of the object, m = 20 kg

Velocity, v = 54 km / hr = 15 m/s

Kinetic energy, K. E. = 1/2 mv^2

=> 1 / 2 × 20 × 15 × 15 kg m/s^2

=> $\bf{2250\: kg \:m/s^2}$