A rock of mass m and a rock of mass 2m are both released from rest at the same height and fee no air resistance as they fall. Which statements about these rocks are true? (there may be more than one!) EXPLAIN HOW YOU KNOW THEY ARE TRUE AND EXPLAIN WHY THE OTHERS ARE WRONG!!!(a) Both have the same initial gravitational potential (b) Both have the same kinetic energy when they reach the ground (c) Both reach the ground at the same speed. (d) When it hits the ground, the heavier rock has 4 times the kinetic energy of the lighter one.
1 answer
Good fight.
3 answers