College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 68

Two identical stones are thrown from the top of a tall building. Stone 1 is thrown vertically downward with an initial speed v , and stone 2 is thrown vertically upward with the same initial speed. Neglecting air resistance, which stone hits the ground with a greater speed: (a) stone 1, (b) stone 2, or (c) both have the same speed