# A body with a mass of m = 1 kg is thrown upward at a speed of V = 10 m / s.

October 4, 2021 | education

| **A body with a mass of m = 1 kg is thrown upward at a speed of V = 10 m / s. Body lifting height 4m. find work force air resistance.**

To calculate the value of the work performed by the air resistance forces, we use the formula: Asopr = Ek – Ep = m * Vn ^ 2/2 – m * g * h.

Constants and variables: m – the mass of the thrown body (m = 1 kg); Vн – initial speed (throwing speed; Vн = 10 m / s); g – acceleration due to gravity (g ≈ 10 m / s2); h – lifting height (h = 4 m).

Calculation: Asopr = m * Vn ^ 2/2 – m * g * h = 1 * 10 ^ 2/2 – 1 * 10 * 4 = 10 J.

Answer: The work done by the air resistance forces is 10 J.