- #1

nickb145

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## Homework Statement

A parachutist leaps from a hovering helicopter, after 4.0s of freefall shouts back at 425Hz. What frequeny is heard at the helicopter?

## Homework Equations

f'=f/(1+Vs/V)

Vsource=?

f'=?

f=425Hz

V=343m/s

## The Attempt at a Solution

I'm stuck on finding the speed for the jumper. I'm sure it's simple but i just can't think of it for somereason.

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