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

A spring loaded gun fires a 0.56g ball at an angle of 45 degrees from a horizontal lab bench at a height of 1.30m. The ball strikes the floor 5.64m horizontally (range) from the point of release. If the spring is compressed by 6.50 cm, what is the gun's spring constant

2. Relevant equations

1/2kx^2

1/2mv^2

3. The attempt at a solution

The final step is to sub the values for 1/2mv^2 = 1/2kx^2 and find the value for k.

Here's my diagram

http://img210.imageshack.us/img210/9712/diagramu.jpg [Broken]

Cos 45 = Vx/V1

Vx = cos 45(v1)

Vx = Dx/t

(cos45)(v1) = dx/t

v1 = dx/(cos 45)t

From here I need to solve for time, but i have no idea how to

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# Homework Help: Elastic and Kinetic problem

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