An amateur rocket is propelled vertically upwards from the ground during which the rocket engine provides constant upward acceleration. AT the instant the engine power burns out, the rocket has risen to a height of 56 m and acquired a velocity of 40 m/s. The rocket continues to coast upwards in unpowered mode and reaches the maximum height before finally falling back to the ground. Determine the time interval during which the rocket engine provides upward acceleration and the value of this upward acceleration. a. 2.8 s and 14 m/s/s b.2.9 s and -14 m/s/s c. 2.9 s and 14 m/s/s d. 2.8 s and -14 m/s/s
An amateur rocket is propelled vertically upwards from the ground during which the rocket engine provides constant upward acceleration. AT the instant the engine power burns out, the rocket has risen to a height of 56 m and acquired a velocity of 40 m/s. The rocket continues to coast upwards in unpowered mode and reaches the maximum height before finally falling back to the ground. Determine the time interval during which the rocket engine provides upward acceleration and the value of this upward acceleration. a. 2.8 s and 14 m/s/s b.2.9 s and -14 m/s/s c. 2.9 s and 14 m/s/s d. 2.8 s and -14 m/s/s
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An amateur rocket is propelled vertically upwards from the ground during which the rocket engine provides constant upward acceleration. AT the instant the engine power burns out, the rocket has risen to a height of 56 m and acquired a velocity of 40 m/s. The rocket continues to coast upwards in unpowered mode and reaches the maximum height before finally falling back to the ground. Determine the time interval during which the rocket engine provides upward acceleration and the value of this upward acceleration.
a. 2.8 s and 14 m/s/s
b.2.9 s and -14 m/s/s
c. 2.9 s and 14 m/s/s
d. 2.8 s and -14 m/s/s
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