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Fynjy0 [20]
3 years ago
12

A 2,000kg car uses a braking force of 12,000 N to stop in 5 s

Physics
1 answer:
I am Lyosha [343]3 years ago
5 0

Knowing the amount of force F and the length of time t that force is applied to an object will tell you the resulting change in its momentum ΔP . This is:

F*t = ΔP

ΔP = F*t    <em>but ΔP = mv</em>

mv = F*t

v = F*t/m

v = 12000 N × 5 s / 2000 kg

<h3>v = 30 m/s</h3><h2 /><h2>A/ The initial speed of the car was 30 m/s</h2>
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