A spacecraft orbiting a planet goes out of control and starts falling towards a planet. The spacecraft falls 1200 meters in the first 10 seconds after which the retro-rocket fires and the craft starts to accelerate upwards at 0.5 g 9( 1 g = 9.81 m/s²)
a. How long after the rocket fires does the craft stop falling?
b. How much further does the craft fall before stopping?
c. How many seconds after the rocket fires does the craft reach its original point?