Pleeeeeeeeeeeeeeeeease Help! A test rocket is fired vertically upward from a well. Acatapult gives it an initial speed of 79.2 m/s at ground level. Its engines then fire and it accelerates upward at 4.10 m/s^2 until it reaches an altitude of 950m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s^2. (You will need to consider the motion while the engine is operating separate from the free-fall motion.) a) How long is the rocket in motion above the ground? b) What is its maximum altitude? c) What is its veloctiy just before it collides with the Earth?