A 1000-kg helicopter hovers over a forest fire and starts to squirt water downward with a speed of 10 m/s at a rate of 40 kg/s. What is the initial upward acceleration on the helicopter when it first starts to release the water?

A)

2.5 m/s2

B)

0.40 m/s2

C)

0.25 m/s2

D)

4.0 m/s2

E)

5.0 m/s2


B

Physics & Space Science

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