An amusement park ride spins you around in a circle of radius 7.2 m with a speed of 21.3 m/s. if your mass is 80 kg, what is the centripetal force acting on you?

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i just did this and got a 100.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s