A toy rocket is launched vertically, from rest, from ground level (y = 0), at t = 0. The rocket engine provides constant upward acceleration during...

A toy rocket is launched vertically, from rest, from ground level (y = 0), at t = 0. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 50 m and acquired a velocity of 60 m/s. The rocket continues to rise in unpowered flight, reaches maximum height and falls back to the ground.