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11-10-2020
Physics

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A projectile is launched horizontally at off a 20m high position. It goes 60m
horizontally. What was its launch speed?

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pfellas pfellas

11-10-2020

The time in flight is
from s= 1/2 g t^2
so t = square root ((2x20)/ 9.8)
t = 2 seconds.

This means the horizontal speed was 30 m/s

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