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A net force of 3,000.0 N accelerates a car from rest to 36.0 km/h in 5.00 s. (a) What is the mass of the car? (b) What is the weight of the car?

Respuesta :

Answer:

F = m a

t = 5 s

V1 = 0    V2 = 36000 m / 3600 sec = 10 m/s

a = (V2 - V1) / t = (10 - 0) m/s / 5 s = 2 m/s^2

F = m a     and   m = F / a = 3000 / 2 = 1500 kg

W = m g = 1500 kg * 9.8 m/s^2 = 14,700 N

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