A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 4.00 m/sand feels no appreciable air resistance. When it has reached a height of 525 m, its engines suddenly fail so that the only force acting on it is now gravity. The following questions refer to the above text. What is the maximum height in m the rocket attains above the launch pad? 525 How much time in s elapses from the moment the rocket's engines fail until the rocket crashes back down onto the launch pad? How fast in m/s is the rocket moving when it crashes into the launch pad?