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An attack helicopter is equipped with a 20- mm cannon that fires 143 g shells in the forward direction with a muzzle speed of 1040 m/s. The fully loaded helicopter has a mass of 5920 kg. A burst of 229 shells is fired in a 5.19 s interval. The resulting average force on the helicopter is 6559N. By what amount is its forward speed reduced? Answer in units of m/s.

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An attack helicopter is equipped with a 20- mm cannon that fires 143

g shells in the forward direction with a muzzle speed of 1040 m/s. The fully loaded helicopter has a mass of 5920 kg. A burst of 229 shells is fired in a 5.19 s interval. The resulting average force on the helicopter is 6559N. By what amount is its forward speed reduced? Answer in units of m/s.

 
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