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A 150g tennis ball coming at a speed of 40m/s

A 150g tennis ball coming at a speed of 40m/s A 150 g tennis ball coming at a speed of 40 m/s is hit straight back by a bat to speed of 60 m/s. The magnitude of the average force F on the ball, when it is in contact for 5 ms with the bat is (1) 2500 N (3) 3500 N (2) 3000 N (4) 4000 N

F=Mass*acceleration =150*(-60-40)/5*10^-3
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In a triangle ABC is equal to 2 is equal to 3 and sin a equal to 2 by 3 then what is Angle B equal to
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SinB=√5/3
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F=3000N

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