Question

A ball is rolling across the floor at a constant velocity. What is the value of the change in its kinetic energy, ΔEk?

Answer 1

B. When the ball is rolling across the floor at a constant velocity, the change in its kinetic energy is zero.

What is change in kinetic energy?

The change in kinetic energy of an object is the dereference between the final kinetic energy and the initial kinetic energy.

ΔK.E = K.Ef - K.Ei

ΔK.E = 0.5m(vf² - vi²)

where;

• K.Ef is the final kinetic energy
• K.Ei is the initial kinetic energy
• vf is final velocity
• vi is initial velocity

At constant velocity, the initial velocity and final velocity are equal.

ΔK.E = 0.5m(0) = 0

Thus, when the ball is rolling across the floor at a constant velocity, the change in its kinetic energy is zero.

Learn more about kinetic energy here: brainly.com/question/25959744

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