Q

A cricket ball of mass 0.15 kg is thrown horizontally at 30 m/s from the top of a building. What is the ball's kinetic energy as it leaves the hand?

RRB JE 19/02/2026 / 9:00 AM - 10:30 AM 2026
✓ Answer: C 67.5 J
Kinetic energy is KE = 1/2 mv². Substituting m = 0.15 kg and v = 30 m/s gives KE = 0.5 × 0.15 × 900 = 67.5 J.
← Previous Question Next Question →

📚 Related Questions

1 The kinetic energy of a moving object depends on its: 2 Work is done on a body only when: 3 What is equivalent to 1 bar in unit of pressure? 4 A 0.1 kg ball is dropped from rest and falls 2 metres…. 5 Why are alloys preferred for the heating elements in devices like toasters? 6 Kerosene rises through the wick of a lantern because of: