A rocket, starting from rest, moves upward with an acceleration of 29.4m/s2. It travels for 4 seconds in the air at this acceleration.
A. How far does the rocket travel during this time?
B.After the 4 seconds, the rocket runs out of fuel, but continues to rise at an acceleration of -9.8m/s2 until it comes to a stop. Find how far the rocket is from the ground when it stops.
Please help me with this. I've been working on this for an hour.
Also show work please, so that i can finally understand how to get the answers.