Mass of a car 1000kg the car will accelerate from 0 to 30 m/s in 12 seconds A)calculate the average acceleration of the car driving in 12 seconds

B)calculate the force needed to produce the acceleration

Acceleration= 2.5m/s^2and force =2500N

A) acceleration=30/12=2.5m/s^2

B)F=m*a=1000*2.5=2500N

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Explanation:

coil wire, increase current, put iron inside the coil

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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