Dimas reads that it takes 270 n to lift a firefighter’s equipment. if a firefighter does 5400 j of work carrying the equipment up a staircase, how high does the firefighter climb? (work: w = fd)

The experiments with static charges were done by:

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.

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?