I am currently doing a project involving an object sliding down a slope and falling freely for a given height afterwards. The horizontal distance is recorded, as is the angle of the slope. I have been trying to create an equation for u (the initial speed) from this data, but I haven't been able to. We are given that:(adsbygoogle = window.adsbygoogle || []).push({});

y = x(tan[theta]) - ((4.9x^2)/(u^2))(1+tan^2[theta])

y = vertical displacement (known)

x = horizontal displacement (recorded)

[theta] = slope angle (recorded)

u = initial speed (required)

This seems to be a slight variation on a few other problems I've seen on this forum, and try as I have, I haven't been able to relate that help to my situation - mainly because Ihaveto use SUVAT.

I can't seem to arrange the equation in a suitable form to easily give 'u'. I'd be really grateful for any help you could give me.

Thanks

Simon

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# Homework Help: Finding u using SUVAT

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