# Question about motion

1. Oct 16, 2007

### kevinf

1. The problem statement, all variables and given/known data
A ball rolls horizontally off the edge of a tabletop that is 1.00 m high. It strikes the floor at a point 1.64 m horizontally away from the table edge. (Neglect air resistance.). How long was the ball in the air and what speed was it at the instant it left the table.

2. Relevant equations
x-x0 = V0xT + .5(a)t^2

y-y0 = V0yT - .5(g)t^2
3. The attempt at a solution
i am having trouble figuring out anything with this little information. i have tried to use the equations that i provided but it was missing velocity. any other way that i can do that i may have missed?

2. Oct 16, 2007

### PhanthomJay

Your equations are correct. What is the value of V0y? What is the value of 'a' in the x direction?

3. Oct 16, 2007

### kevinf

yeah but i don't know how to find V0y with that information

4. Oct 16, 2007

### PhanthomJay

it's given that the ball rolls off the table horizontally. So what is its initial speed in the y direction if it initially is moving horizontally in the x direction only?

5. Oct 16, 2007

### kevinf

thanks i got the answer.