If it takes a cheetah 0.25 seconds to go from 10m/s to 15 m/s what is the cheetahs acceleration

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Why don't you see your reflection in water with waves or repples