**Solution:**

Mass of the object, m = 15 kg, velocity

of the object, v = 4 m s^{–1}, E = 1/2 m v^{2 }

k . E = 1 / 2 × 15 kg × 4 m s^{–1} × 4 m s^{–1}

= 120 J

The kinetic energy of the object is 120 J.

**Solution:**

Mass of the object, m = 15 kg, velocity

of the object, v = 4 m s^{–1}, E = 1/2 m v^{2 }

k . E = 1 / 2 × 15 kg × 4 m s^{–1} × 4 m s^{–1}

= 120 J

The kinetic energy of the object is 120 J.