Question

A car is moving with s uniform velocity of 45k/h. What is the kinetic energy of an object of mass 35 kg kept in the car?

Answer 1

KE = ½mv²
= ½ × 35 × (45)²

Answer 2

Explanation:

Kinetic Energy (K) = 1/2 * Mass (M) * Velocity (V)^2

K = 1/2 * 20 kg * 5 m/s * 5 m/s

K = 10 kg * 25 m^2/s^2

K = 250 kg m^2 / s^2

1 Joule (J) = 1 kg m^2 / s^2, so you are looking at a total Kinetic Energy of 250 Joules (250 J)