I have been stuck on this for a while....

A projectile's launch speed is five times it speed at maximum height. Find the launch angle.

Anybody have any clue how to do this?

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- September 16th 2008, 06:55 PMElite_Guard89Projectile Motion
I have been stuck on this for a while....

A projectile's launch speed is five times it speed at maximum height. Find the launch angle.

Anybody have any clue how to do this? - September 16th 2008, 08:50 PMmr fantastic
- October 1st 2008, 01:54 PMsu-z-q
- October 1st 2008, 02:10 PMGreengoblin
(at maximum height), since this is the parabolic path of a projectile. So you have an unknwn velocity at maximum height, , an, unknown initial velocity, , and an unknown angle , which you need to find. I'd say there isn't enough information to find it. if you are assuming gravity of , and have the final velocity, the launch and impact heights, then you could plug in the values for x and y, and solve simultaneous equations using the equations of motion.