Task data: m (mass of a moving body) = 50 kg; V (body speed) = 72 km / h = 20 m / s; t (duration of movement) = 40 s.
To find the force acting on a given moving body, we use the formula: F = m * a = m * (V / t).
Calculation: F = 50 * 20/40 = 25 N.
Answer: Movement to a given body is imparted by a force of 25 N.
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