A Rocket Is Launched from the Origin with an Acceleration

question 56

Multiple Choice

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 time of flight?

• A) 6.02 s
• B) 6.91 s
• C) 7.23 s
• D) 7.44 s
• E) 8.02 s

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