You push a box of mass 20.9 kg with your car up to an icy hill slope of irregular shape to a height 4.6 m. The box has a speed 12.7 m/s when it starts up the hill, the same time that you brake. It then rises up to the top (with no friction) to a flat area before sliding into a box larger box of mass 10 kg. The boxes then fall off a sheer cliff together to the ground (with no drag). (a) What is the velocity of the pair just before hitting the ground? { Coordinate Form } V = 0 x y + - 14.11 m/s x z (b) What is the velocity of the pair just before hitting the ground? { Vector Form } y + 2 ) (c) How much does the kinetic energy change in the situation? (d) What is the path basis just before impact? t = * + y + 12 n = * + y + b = * + ly + Viewing Saved Work Revert to Last Response Submit