If we push a car 30 m with a total fourth of 2000 if we push a car 30 m with a total Force 12,000 how much work did we do

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form