What is an initial speed given to the rock

Reference no: EM134615

Question1

A soccer player kicks a rock horizontally off of a 40.0m high cliff into a pool of water. If he hears sound of the splash 3.00 seconds later, what was an initial speed given to the rock? Suppose the speed of sound in air to be 343 m/s.

Question2

Heather and Jerry are standing on a bridge 60m above a river. Heather throws a rock straight down with a speed of 19 m/s. Jerry, at accurately the same instant of time, throws a rock straight up with the similar speed. Overlook air resistance. How much time elapses between the first splash and the second splash?

Reference no: EM134615

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