Posted by Jennifer on Wednesday, September 10, 2008 at 2:59pm.
A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point.What is the angle of launch?
What is the launch speed?

Physics  bobpursley, Wednesday, September 10, 2008 at 3:42pm
I don't think it can be worked, without knowing how long the engine burns. The rocket is not a projectile until the fuel burns out. The launch speed is easy, it starts at zero veloicty, the rocket burns and it is accelerated upward.

Physics  Anonymous, Monday, December 5, 2016 at 12:49am
The answers is 69 degrees. I don't know why
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