A 0.47 kg baseball moves to the left (HINT: what sign would velocity have here) at 16 m/s striking a bat. The bat is in contact with the ball for .002 s, and it leaves in the opposite direction at 63 m/s.
What was average force on ball?

b.transmitters send radio waves, and receivers capture radio waves.

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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