A boy of mass 60 kg standing on a platform of mass 40 kg placed over a smooth horizontal surface. He throw, a stone of mass 1 kg with velocity u = 10 m/s at on angle of 45^(@) w.r.t the ground. The displacement of platform (with boy) on the horizontal surfaces when the stone lands on the ground is (g=10 m//s^(2)0

A boy of mass 60 kg standing on a platform of mass 40 kg placed over a

1.	A boy of mass 60 kg standing on a platform of mass 40 kg placed over a smooth horizontal surface. He throw, a stone of mass 1 kg with velocity u = 10 m/s at on angle of 45^(@) w.r.t the ground. The displacement of platform (with boy) on the horizontal surfaces when the stone lands on the ground is (g=10 m//s^(2)0
Answer» SOLUTION :`1.u cos 45^(@)=(60+40)v, v=(1)/(10sqrt(2))` TIME of light `= T_(f)=(2U sin theta)/(g)=SQRT(2)SEC`. `S = v xx T_(f)=0.1m`.