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A sudden gust of wind exerts a force of 19.0 N for 1.20 s on a bird that had been flying at 5.00 m/s. As a result, the bird ends up moving in the opposite direction at 7.00 m/s. 1) What is the mass of the bird

Sagot :

Answer:

Explanation:

An impulse results in a change of momentum

FΔt = mΔV

m = FΔt / ΔV

m = F(t₁ - t₀) / (v₁ - v₀)

If the initial flight direction is the positive direction

m = -19.0(1.20 - 0.00) / (-7.00 - 5.00)

m = 1.9 kg

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