tatyalvarez tatyalvarez

21-12-2020
Physics

contestada

A force of 1510 N is needed to bring a car moving at 22.0 m/s to a halt in 25.0 s. What is the mass of the car?

Respuesta :

LammettHash LammettHash

25-12-2020

The car undergoes an acceleration a of

a = (0 - 22.0 m/s) / (25.0 s) = -0.880 m/s²

The force acts in a direction opposite the car's motion, so the car has mass m such that

-1510 N = m (-0.880 m/s²)

m = (1510 N) / (0.880 m/s²) ≈ 1715.91 kg ≈ 1720 kg

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