UK a worker brought a 50.8 kilogram bag of coal non-stop at a distance of 54.7 kilometers

UK a worker brought a 50.8 kilogram bag of coal non-stop at a distance of 54.7 kilometers in 12 hours 45 minutes? What kinetic energy does the bag have?

Initial data: m (weight of the bag with coal) = 50.8 kg; S (distance the worker carried the bag without stopping) = 54.7 km; t (time of movement of the worker) = 12 hours 45 minutes (12.75 hours).

1) Average speed of movement of the worker (bag with coal): V = S / t = 54.7 / 12.75 = 4.29 km / h (1.19 m / s).

2) The kinetic energy possessed by a bag of coal: Ek = 0.5 * m * V ^ 2 = 0.5 * 50.8 * 1.19 ^ 2 ≈ 36 J.

Answer: The bag of coal had a kinetic energy of 36 J.