What speed when it hits the sidewalk

Reference no: EM13558610

a) The empire state building is 450 meters high. A pennydropped from the top would have what speed when it hits thesidewalk?

b) A baseball player pops a flyball 20.0m straight up and the cathcer tossess his mask to catch the ball. How long will the cathcer have to wait after the ball starts back down?

c) What is the initial speed of a car that required 13.7 m tostop in 4.00 s?

Reference no: EM13558610

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