A car with a mass of 2t is moving with an acceleration of 1m / s2 (V0 = O). Find the work of the engine

A car with a mass of 2t is moving with an acceleration of 1m / s2 (V0 = O). Find the work of the engine thrust force on a path of 100m. The coefficient of friction is 0.05.

Initial data: m (vehicle weight) = 2 tons (2 * 10 ^ 3 kg); a (acceleration) = 1 m / s2; V0 (initial speed) = 0 m / s; S (distance traveled) = 100 m; μ (coefficient of friction) = 0.05.

Reference data: g (acceleration due to gravity) ≈ 10 m / s2.

1) Determine the thrust force of the engine: m * a = Fthrust – Ftr., Whence Fthrust = m * a + Ftr. = m * a + μ * m * g = 2 * 10 ^ 3 * 1 + 0.05 * 2 * 10 ^ 3 * 10 = 3 * 10 ^ 3 N.

2) Work of the engine thrust force on a given path: A = F * S = 3 * 10 ^ 3 * 100 = 300 * 10 ^ 3 J (30 kJ).