If the arrow’s kinetic energy is zero at it’s maximum height, calculate the initial velocity of this arrow as it is shot from the ground? And what’s your approach?

Plss anybody know how to do this? ? i need the answers from a through d

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.