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

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

horizontally. What was its launch speed?

User Nikkorian
by
7.7k points

1 Answer

2 votes
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
User Pierre Plourde
by
8.0k points
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