Recent content by jsrds

I think boat also change the velocity, due to this we assumed, the man does not apply force on BOAT A, As we have FC→A=0=ΔpAΔt⇒ΔpA=0⇒mA(vA+dvA)−(mA+mC)vA=0⇒dvA=mCmAvA. So conservation of momentum equation is: (mA+mC)vA+mBvB=mA(vA+dvA)+(mB+mC)(vB+dvB).

I think so because weight is the force pulling object down. The force from the ground on object is what is pushing object up.