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Greeley [361]
3 years ago
14

On hot sunny days, tire should not be over-inflated,why?

Physics
1 answer:
Alenkinab [10]3 years ago
4 0
The adds pressure to the tire which would cause it to burst
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A body is moving vertically upwards. It’s velocity changes at a constant rate from 50m/s to 20m/s in 3 sec. What is it’s acceler
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Car A (mass 1100 kg) is stopped at a traffic light when it is rear­ended by car B(mass 1400 kg). Both cars then slide with locke
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Answer:

Part a)

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Part b)

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Part C)

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Explanation:

Part a)

As we know that car A moves by distance 6.1 m after collision under the frictional force

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a = -\frac{F_f}{m}

a = -\frac{\mu mg}{m}

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now we will have

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Part b)

Similarly for car B the distance of stop is given as 4.4 m

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v_b = \sqrt{2(0.13)(9.81)(4.4)}

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Part C)

By momentum conservation we will have

m_1v_{1i} = m_1v_{1f} + m_2v_{2f}

1400 v_b = 1100(3.94) + 1400(3.35)

v_b = 6.44 m/s

Part d)

Due to large magnitude of friction between road and the car the momentum conservation may not be valid here as momentum conservation is valid only when external force on the system is zero.

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