# A model rocket is launched straight upward with an initialspeed of 50.0 m/s. It accelerates with a constant upwardacceleration of 2.00 m/s2 until its engines stop at an altitudeof 150. m. (a) What can you say about the motion of therocket after its engines stop? (b) What is the maximum heightreached by the rocket? (c) How long after liftoff does therocket reach its maximum height? (d) How long is the rocketin the air?

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A model rocket is launched straight upward with an initial
speed of 50.0 m/s. It accelerates with a constant upward
acceleration of 2.00 m/s2 until its engines stop at an altitude
of 150. m. (a) What can you say about the motion of the
rocket after its engines stop? (b) What is the maximum height
reached by the rocket? (c) How long after liftoff does the
rocket reach its maximum height? (d) How long is the rocket
in the air?

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Step 1

(a) write the expression for final velocity when the engine stops

Step 2

Substitute the values

Step 3

(b) write the expression for maxi...

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