Rising Rocket
A toy rocket is observed to accelerate upwards at a uniform acceleration of 12.5 m/s2for 3.50 s before its engine shuts off. If air resistance is negligible:
(A) What is the maximum upward speed the rocket will be moving when its engine shuts down ?
(B) What is the maximum height that the rocket will reach above the ground ?
(C) How long will the rocket be in flight ?
 (D) How fast will the rocket be moving when it returns to the ground ?