A car with a mass of 30 and with a speed of 2 m / s and collides with a car with a mass of 20 tons, which is moving in the same

univerkov | November 16, 2020 | education

A car with a mass of 30 and with a speed of 2 m / s and collides with a car with a mass of 20 tons, which is moving in the same direction as the first at a speed of 1.5 m / s, determine the speed of their joint movement.

decision
M1 * V1 + m2 * V2 = (m1 + m2) * V
V = (m1 * V1 + m2 * V2) / (m1 + m2) = (30 * 2 + 20 * 1.5) / (30 + 20) = 1.8 m / s

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