An object is dropped from some height and takes 5.5 seconds to hit bottom when it hits the bottom it's going out a velocity of 53.9 M/sec what is its acceleration

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?