# The horse pulls the cart at a constant speed of 0.8 m / s, applying a force of 400 N. What work did it do in 2 hours?

March 28, 2021 | education

| We calculate the work of a horse using the formula:

A = F * S, where F is the constant force applied by the horse (F = 400 N), S is the path traveled by the horse.

S = V * t, where V is the horse’s speed (V = 0.8 m / s); t – the time of movement of the horse (t = 2 h = 2 * 60 * 60 = 7200 s).

Let’s calculate the work done by the horse:

A = F * S = F * V * t = 400 * 0.8 * 7200 = 2304000 J = 2.304 * 10 ^ 6 J = 2.304 MJ.

Answer: In 2 hours, the horse completed work at 2.304 MJ.

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