Kinetic energy = (1/2) (mass) (speed)²
It doesn't matter what direction the object is moving, what happened to set it in motion, or what route it's following.
Kinetic energy = (1/2) (40 kg) (31.3 m/s)²
Kinetic energy = (20 kg) (979.69 m²/s²)
Kinetic energy = (20 x 979.69) (kg-m²/s²)
Kinetic energy = 19,594 joules
