Question

Asked Feb 5, 2019

A boy throws a rock horizontally with a velocity of 8.0 m/s from a bridge. It falls 19.0 m to the water below. What is the magnitude of the velocity of the rock just before it hits the water?

Step 1

If *v*_{x} is the initial horizontal velocity, *g *is the acceleration due to gravity, the time taken for the rock to reach water is *t*, distance is *d*, then,

Step 2

Vertical component of velocity *v*_{y} is,

Step 3

Velocity *v* of the rock just before...

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