The horse drives the cart evenly at a speed of 0.8 m / s, applying an effort of 400 N.

The horse drives the cart evenly at a speed of 0.8 m / s, applying an effort of 400 N. What work is done in this case in 1 hour?

Task data: V (constant speed of the horse’s movement) = 0.8 m / s; F (traction force applied by the horse) = 400 N; t (duration of movement) = 1 hour (in SI t = 3600 s).

The work that the horse should have done in 1 hour is calculated by the formula: A = N * t = F * V * t.

Let’s calculate: A = 400 * 0.8 * 3600 = 1152 * 10 ^ 3 J (1152 kJ).

Answer: In 1 hour, the horse performed work equal to 1152 kJ.