Rocket engineer

Tests of a new rocket engine are conducted. The rocket is launched straight up and data collected by computers and displayed as graphs. As the engineer in charge of evaluating the new engine, you are handed a graph of speed versus time. You take the graph and go into the office of the chief engineer to discuss the results.

Answer the Chief’s questions

1) For how many seconds did the fuel last for?

2) How many seconds after launch did the rocket reach peak altitude?

3) How long did the rocket take to return back to earth?

4) Did the parachutes open or did the rocket crash?

5) At what speed did the rocket return back to earth?

6) Between 15 and 25 seconds the rocket is decelerating. What force/s cause the deceleration?