(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I need help with these 2 problems:

A hunter aims directly at a target (on the same level) 81 m away. If the bullet leaves the gun at a speed of 225 m/s, how far below the target will the bullet hit?

A rifle bullet is fired at an angle of 15.2° below the horizontal with an initial velocity of 154 m/s from the top of a cliff 63.9 m high. How far from the base of the cliff does it strike the level ground below?

2. Relevant equations

3. The attempt at a solution

Vx = 225 m/s, x = 81 m

Vyo = 0 m/s ?

a = -9.8 m/s/s, t = .36 s (from Vx = x/t)

so I used y = Vot + at^2 to find y, but that's not right...

and for the second one

Vx = 148.613 m/s

Vo = -40.377 m/s, a = -9.8 m/s/s, y = -63.9 m

using the same equation, t = 1.221 s

and V = x/t, x= 181.456 m

again, not right. help please.

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# Homework Help: Projectile Motion

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