!!!!!!!!!!!!!!!!!!PLEASE HELP QUICK 30 BRAINLY POINTS!!!!!!!!!!!!!!
A two-stage rocket accelerates from rest at +3.57 m/s/s for 6.82 seconds. It then

accelerates at +2.98 m/s/s for another 5.90 seconds. After the second stage, it enters

into a state of free fall. Determine:

a. the maximum speed

b. the maximum altitude

c. the height of the rocket after 20.0 seconds

d. the total time the rocket is in the air (assuming it is launched from the ground)

!!!!!!!!!!!!!!!!!!PLEASE HELP QUICK 30 BRAINLY POINTS!!!!!!!!!!!!!!