Question

A boy of mass 40 Kg running at 5 m/s jumps on to a 20 Kg trolley travelling in the same direction at 2 m/s. What is the common velocity? and amke you as a brainliest

Answer 1

40kg×5m/s + 20kg × 2m/s = (40+20)kg×V

(200+40)Kgm/s = 60Kg×V

V = 240/60

V = 4m/s