Question

The kinetic energy(Jules) of an object can be calculated using the following formula:

In the formula above,m=mass of the object, and v=the velocity of the object in motion.What is the kinetic energy,in Jules,of a bowling ball with a mass of 6 kg and a velocity of 5 m/s?

Answer 1

75 J

Explanation:

You want to know the kinetic energy in joules of a 6 kg ball that has a velocity of 5 m/s. The formula is given.

Kinetic energy

Kinetic energy is energy of motion. It is jointly proportional to mass and the square of velocity. The value is given by the formula ...

KE = 1/2·mv²

For the given values of mass (6 kg) and velocity (5 m/s), the kinetic energy is ...

`KE=(1)/(2)(6\text{ kg})(5\text{ m/s})^2=75\text{ kg$\cdot$m$^2$/s$^2$}=\boxed{75\text{ J}}`

The kinetic energy of the ball is 75 joules.

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Additional comment

The unit joule (J) is a derived unit of energy equal to 1 kg·m²/s²