A Rocket Is Launched from the Origin with an Acceleration

A rocket is launched from the origin with an acceleration of 20.0 m/s² at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.80 m/s² downward. What is the total horizontal distance (range) covered when the rocket hits the ground?

A) 153 m
B) 166 m
C) 187 m
D) 205 m
E) 230 m

Correct Answer:

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