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## Homework Statement

During a hailstorm, hailstones with an average mass of 2g and a speed of 15m/s fall vertically down and strike a winshield angled at 45 degrees and bounce off at the same speed horizontally. The area of the window is .5m

^{2}What is the average pressure they exert on the window?

## Homework Equations

## The Attempt at a Solution

So far this is what i've worked out:

Pressure = Force/Area

Force = ma but since there is no loss in velocity then that means that a=0 and the stones exert no force on the window?