# Motion in 2D Question

1. Jun 9, 2009

### rjelalam

Please Help! Motion in 2D Question

1. The problem statement, all variables and given/known data

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 15.0 m/s. The cliff is h = 26.0 m above a flat horizontal beach, as shown in Figure P3.24.

2. Relevant equations
How long after being released does the stone strike the beach below the cliff?

With what speed and angle of impact does the stone land?
_________m/s
_________° below the horizontal

3. The attempt at a solution

2. Jun 9, 2009

### rock.freak667

Re: Please Help! Motion in 2D Question

I tihnk you forgot that part

start with the kinematic equations.

3. Jun 10, 2009

### jman565

Re: Please Help! Motion in 2D Question

Well, that depends on the height of the student, unless of course, the 26.0 meters include the student's height with the cliff's. Try to find an equation that involves gravity as that is most definitely important. Also, find the distance from where the rock was released to the where it lands, then use the law of Sines to find your angle. I hope this is helpful, as this is one of my first posts! :rofl:

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