Answered

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A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s. Find its
mass

Sagot :

sgrigg5053

Answer:

The mass of a rolling ball with kinetic energy of 18 joules and velocity of 3m/s is 4kg.

Explanation:

HOW TO CALCULATE MASS?

The mass of a moving object can be calculated by using the following expression:

K.E = ½ mv²

Where;

K.E = kinetic energy (Joules)

m = mass (kg)

v = velocity (m/s)

According to this question, rolling ball has 18 joules of kinetic energy and is rolling at 3m/s. The mass is calculated as follows:

18 = ½ × m × 3²

18 = ½ × 9m

36 = 9m

m = 4kg

Therefore, the mass of a rolling ball with kinetic energy of 18 joules and velocity of 3m/s is 4kg.

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