Question

An impulse of 20 gms act on the particle in problem#1in the same direction as the velocity what is the final velocity

Answer 1

A 35 Kg boy running at a velocity of 2 m/s to the right, jumps onto a trolley at rest of mass 70 Kg. What is the speed of the trolley and the boy after the boy has jumped in? A system of two items: the boy and the trolley and the interaction is when the boy jumps onto the trolley. v = 70 / 105 = 0.7 m/s to the right.