A rocket is fired straight up and accelerates upward at 20 m/s2 for 12 seconds. The rocket then runs out of fuel and coasts still going up. Ignore any air resistance effects and use -9.8 m/s2 for the local acceleration due to gravity.
a) What is the rocket's maximum altitude?
b) If the retarding drag chute fails, what is the rocket's velocity when it hits the ground?
c) How long is the rocket in the air, from take off until it hits the ground?