Question

4. A ball has 17J of kinetic energy (KE) and its mechanical energy is 25J. What is the speed of the
ball? The ball has a mass of 3.2 kg.

Answer 1

Answer:3.25914099112

Explanation:

Do you have the formula? I pretty sure this is correct but I’m not sure

Answer 2

Speed of ball is 3.2 m/s (Approx.)

Given that;

Kinetic energy (KE) = 17 J

Mechanical energy = 25 J

Mass of ball = 3.2 kg

Find:

Speed of ball

Computation:

Kinetic energy (KE) = [1/2][mv²]

17 = [1/2][(3.2)v²]

17 = [1.6][v²]

v² = 17 / 1.6

v² = 10.625

v = √10.625

v = 3.2596

Speed of ball (v) = 3.2 m/s (Approx.)

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