Calculate the kinetic energy of a 0.145-kg baseball with a velocity of 80 mil/h. Express the answer in Joules.

92.7Joules//

Explanation:

Kinetic energy of moving body is 1/2mv²

K=1/2mv²

Mass = 0.145kg

V=80mil/h = 80×1609.34/3600

=35.76m/s, since 1 mile = 1609.34m and 1 hour = 3600seconds.

From the equation K=1/2mv² you can input.

K=1/2×0.145×35.76²

K=1/2×185.422

K= 185.422/2

K=92.7J//

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

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