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Standard XII

Physics

Instantaneous Force and Impulse

In a heated t...

Question

In a heated tennis match Nadal returns the ball straight to Federer at 40 m/s speed. Federer returns the ball straight back to Nadal at 30 m/s. Given the mass of ball to be 12 kg, find the impulse with which Federer returned the ball?

35 N

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70 N

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70 Ns

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35 Ns

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Solution

The correct option is D
35 Ns

I = mdv

= $\frac{1}{2}$ (40 - (-30))

I = 35 Ns

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In a heated tennis match Nadal returns the ball straight to Federer at 40 m/s speed. Federer returns the ball straight back to Nadal at 30 m/s. Given the mass of ball to be 12 kg, find the impulse with which Federer returned the ball?

The correct option is D 35 Ns I = mdv = 12 (40 - (-30)) I = 35 Ns

The correct option is D
35 Ns

I = mdv

= $\frac{1}{2}$ (40 - (-30))

I = 35 Ns