A chocolate bar has nutritional Energy content of 100K).if an 50 kg mountain climber eats this chocolate bar and converts it all to potential energy.
What altitude (Height) can she climb on a Mountain using this energy? consider q = 10m/s2

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.