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3) A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

Respuesta :

Answer:

Change in momentum will be 1.8 kgm/sec

Explanation:

We have given mass of the ball m = 0.060 kg

Initial speed = 12 m /sec

And final speed = 18 m/sec

We have to find the change in momentum

Change in momentum is given by [tex]\Delta P=m(v_f-v_i)[/tex]

So [tex]\Delta P=0.060\times (18-(-12))=0.060\times 30=1.8kgm/sec[/tex] ( negative sign is due to finally opposite direction of ball )

So change in momentum will be 1.8 kgm/sec

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