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Fynjy0 [20]
2 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]2 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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Two men decide to use their cars to pull a truck stuck in the mud. They attach ropes and one pulls with a force of 615 N at an a
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1398.12 N

Explanation:

We define the x-axis in the direction parallel to the movement of the truck  on and the y-axis in the direction perpendicular to it.

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T₂x= 961 N*cos25°=870.96 N  :Tension in direction x of the rope of the car 2

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4 0
3 years ago
El cuerpo de una persona está cubierto con 1.6 m2 de ropa de lana. El grosor de la lana es 2.0 x 10-3 metro. La temperatura en l
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Answer:

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