What’s the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms?

3 m/s
5 m/s
7 m/s
8 m/s
10 m/s

28. a stone is projected at a cliff of height h with an initial speed of 42.0 mls directed at angle θ0 = 60.0° above the horizontal. the stone strikes at a, 5.50 s after launching. find (a) the height h of the cliff, (b) the speed of the stone just before impact at a, and (c) the maximum height h reached above the grou

An object has a weight of 500 on earth what is the mass of this object

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.