A missile is launched from a silo 50m deep. After 20 seconds the engine stops, there is a 10 second period where the rocket is coasting straight up. At the end of this period, the rocket is 8000m above the ground.
a) What is initial acceleration of rocket?
b) What is rocket's velocity as it passes 8000m?
The Attempt at a Solution
Tried solving for the y1 value, but need v1, can't find v1 without a0, can't find a0 without y1 or v1. I am very lost. I feel like there isn't enough information to solve, but there is probably some trick to this and I am missing it. Help please! Thanks