Question

A vehicle has a mass of 1500 kg. What must be the force between the vehicle and the road if the vehicle is to be stopped with a negative acceleration of 1.7 ms-2?

Answer 1

Answer:

force = mass * acceleration

= 1500kg * -1.7m/s^2

= -2550N

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Answer 2

Answer:

Mass of the automobile vehicle, m= 1500 kg

Final velocity, v= 0 (finally the automobile stops)

Acceleration of the automobile, a= ˆ’1.7 msˆ’2

From Newton€™s second law of motion:

Force = Mass x Acceleration = 1500 x (ˆ’1.7) = ˆ’2550 N

Hence, the force between the automobile and the road is ˆ’2550 N, in the direction opposite to the motion of the automobile.

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