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

You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your physics, you ask one of the archers to shoot an arrow parallel to the ground. You find the arrow stuck in the ground 62.0 m away, making a 3.00 ^\circ angle with the ground. Ignore all possible aerodynamic effects on the motion of the arrow.

How fast was the arrow shot????

2. Relevant equations

Height = tan(theta)*x(distance)

y(t) = yi + Vyi*(t) + .5at^2

3. The attempt at a solution

i first found the height:

Height = tan(theta)*x(distance)

H = tan(3)*62 = 3.25m

then i found the time it took for the arrow to travel:

y(t) = yi + Vyi*(t) + .5at^2

0 = 3.25 +(0)*t + .5(-9.8)t^2

t=0.8144s

then i found the velocity by taking the distance/time:

V=62/0.8144 = 76.13 m/s

This is wrong though. why can't you solve this problem like this?

Thank you

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# Homework Help: Why doesnt this work? velocity

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