Question

In: Physics

A toy rocket is launched vertically from ground level (y = 0 mm), at time t...

A toy rocket is launched vertically from ground level (y = 0 mm), 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 80 m and acquired a velocity of 20 m/s. The rocket continues to rise in unpowered flight, reaches maximum height, and falls back to the ground. The maximum height reached by the rocket is closest to:

Expert Solution

Consider the rocket after engine burnout

Height of the rocket at engine burnout,

Speed of the rocket,

Speed of the rocket at maximum height,

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Use formula

, where is the height covered by the rocket after engine burnout

Put a negative sign for g because even after the engine burnout rocket is going upwards and g is acting downwards.

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Maximum height reached by rocket,

ANSWER:

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genius_generous answered 2 years ago

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