- #1

ICanHasHelp

- 2

- 0

## Homework Statement

A ball is hit from the ground with an angle of 36 degrees above the horizontal. The ball hits a target 30m ahead and 4m above the ground. Find the initial velocity of the ball.

## Homework Equations

V

_{avg}= Δd/Δt

a

_{avg}= Δv/Δt

Δd = v

_{o}Δt + 1/2aΔt

^{2}

## The Attempt at a Solution

Δx = 30m

Δy = 4m

V

_{ox}= V

_{o}* cos 36

V

_{oy}= V

_{o}* sin 36

Δx = v

_{ox}Δt + 1/2a

_{x}(Δt)

^{2}

Δx = (V

_{o}* sin 36)Δt + 1/2a

_{x}(Δt)

^{2}

Since a

_{x}= 0 then

Δx = (V

_{o}* sin 36)Δt

This question appeared on a quiz today and caught me totally by suprise. My teacher had never assigned homework questions like this ever and my textbook did not have any questions like it either. I've asked my teacher for help, but he didn't give me a clear answer. I've tried this question again at home for another two hours but I still couldn't get anything out of it. I know I have to find Δt, but I can't seem to isolate it. I would put all my attempts on the post, but I have already destroyed them in my fustration. Please help me! I'm losing my mind!