What average net force is needed to accelerate a 1380 kg car to a speed of 25 m/s in a time of 7 s?
N
Solution:
To calculate the force we need acceleration,
Using v = u + a * t
=> 25 = 0 + a * 7
=> a = 25 / 7 m/s^2
F = m * a
=> F = 1380 * 25 / 7
=> F = 4928.57 N
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