# Homework Help: Horizontal distance of horizontally fired projectile

1. Jan 3, 2009

### physicsman2

1. The problem statement, all variables and given/known data
If a plane 8500m in the air is traveling with a horizontal speed of 483km/hr when a capsule is released, what is the horizontal distance between the point at which the capsule is released and the point at which the capsule strikes the ground.

2. Relevant equations
vertical displacement = 1/2(g)(time)^2
horizontal displacement = horizontal velocity(time)
*g=acceleration due to gravity
3. The attempt at a solution
i tried to find the time and multiplied it to the horizontal velocity but i didnt get the right answer

2. Jan 3, 2009

### PhanthomJay

Your approach is OK. You probably didn't convert the speed from km/hr to m/s.

3. Jan 3, 2009

### just__curious

Note: one is in meters and one is in km/hr. Your method is right.

4. Jan 3, 2009

### physicsman2

thank you

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