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

A block is given an initial speed of 3.0m/s up a 22 degree plane.

a.) How far up the plane will it go?

b.) How much time elapses before it returns to the starting point?

no friction btw

2. Relevant equations

Assuming that https://www.physicsforums.com/showthread.php?t=427167&highlight=cart+pushed+up+plane" is correct, [tex]v^2 = v_0^2 + 2 a \Delta x[/tex] and a = gsin[tex]\theta[/tex] should work.

3. The attempt at a solution

a=-9.8sin(22)

a=-3.67 m/s^2

initial velocity = 3.0 m/s of course

so

0 = 9 - 7.34 delta X

a.) delta X = 1.23m

t = 1.23 / 3.0

t = .41 seconds

So the trip up is .41 seconds. How do I get the time it takes to roll back?

I'm bad with inclined plane problems, mostly because they scare me :yuck:. What do I do from here, assuming I haven't made a major error up to now?

Also, every time I try to preview my message, it adds a new set of instructions. Very irritating!

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# Homework Help: Block on inclined plane problem

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