A 0.057 kg tennis ball and a tennis racket collide. The racket has an initial momentum of -2.80 kg•m/s and a final momentum of -1.97 kg•m/s. The ball has an initial momentum of 0.2565 kg•m/s. If you assume the collision is elastic, what is the final velocity of the ball? A. -4.75 m/s

B. -83.26 m/s

C. -14.11 m/s

D. -0.80 m/s

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explanation:

4

no sign of dia of fuel cell

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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