If the velocity of a body is decreased to 1/2, then K. E. of the body decreases to​

1/4th

Explanation:

KE = .5mv^2

So when we decrease the velocity by half, we end up losing three fourths of net energy due to that value being squared.

The Kinetic Energy is reduced to 1/4 of the original K. E.

Explanation:

K. E. = 1/2 m v^2

If v becomes v/2 we have:

K E. = 1/2 m (v/2)^2

= 1/2 m v^2/4

So dividing the 2:

we get  1/2 m v^2/4 /  1/2 m v^2

= v^2/4 / v^2

= v^2 / 4v^2

= 1/4.

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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