A toy rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. the rocket engine provides constant upward acceleration during the burn phase. at the instant of engine burnout, the rocket has risen to 65.4 m and acquired a velocity of 50.9 m/s the rocket continues to rise, reaches maximum height, and falls back to the ground. what is the time interval during which the rocket engine provides upward acceleration? (hint: you do not need all of this information. i'm only giving this hint here so you can get used to the idea. sometimes you have more data than you need).