A spaceship takes off at a const. acceleration from earth for 10 sec. and then continues upwards for another 10 secs. until it reaches the height of 5000 m with a velocity of zero at that point before it begins to fall to earth.

• In the first 10 sec. what is the net acceleration the spaceship experienced.
• What was the height when the engines turned off?
• What was the acceleration did the spaceship's engines apply for the first 10 sec. (Different answer then question 1)
• If the spaceship had accelerated for the entire 20 secs., what would have been the height and velocity at 20 secs?