To determine power we need to know thea. energy required and the time it takes b. amount of work and the distance covered c. amount of work in a given timed. distance and time it takes to do work

C.Amount of work in a given time.

It will take annabelle 4 hours to complete her homework. if it took her 3 hours to finish 75%, then it probably took her 1 hour for every 25% she finished. if she finished 75%, she has 25% left to be done or 100% complete. 25% = 1 hour. so 3 hours + 1 hour = 4 hours or 100% complete

If football was tossed in air without gravity or friction the ball would go into space