Question

Solution : Here,
m = 40 kg
Q.1. A boy of mass 40 kg is running with a velocity of 0.5 ms-1. What is his kinetic energy ?​

Answer 1

Explanation:

1. kinetic energy is = 1/2 m v square
2. weight is equal to mass into gravity so
3. mass is 40/10= 4
4. 1/2 ×4 × 0.5 = 1 so the
5. kinetic energy is 1