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A force of 31 N south is used to accelerate an object uniformly from rest to 8 m/s in 22 s. What is the mass of the object?

Respuesta :

saurabhbhoir456

Answer:

85.25 kg

Explanation:

Force = 31 N

v1 = 0 m/s

v2 = 8 m/s

t = 22 s

Acceleration = (v2 - v1) / t

                    = (8 - 0) / 22

                    = 8 / 22

Force = mass * acceleration

mass = force / acceleration

mass = 31 / (8/22)

mass = (31*22) / 8

mass = 85.25 kg

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