What would be the kinetic energy of an object with a mass of 1 kg moving at 5 m/s?

To determine the kinetic energy of an object, the formula to use is:

[ KE = \frac{1}{2} mv^2 ]

where ( KE ) is the kinetic energy, ( m ) is the mass of the object, and ( v ) is its velocity. In this case, the mass is 1 kg and the velocity is 5 m/s.

Using the formula, we can substitute in the values:

1. Calculate ( v^2 ): [ 5 m/s \times 5 m/s = 25 (m/s)^2 ]

2. Now multiply by the mass and then by ( \frac{1}{2} ): [ KE = \frac{1}{2} \times 1 , \text{kg} \times 25 , (m/s)^2 = \frac{25}{2} , \text{kg m}^2/s^2 = 12.5 , \text{Joules} ]

Therefore, the kinetic energy of the object moving at 5 m/s with a mass of 1 kg is 12.5 Joules. The correct choice is thus identified,