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2 years ago

Will it take longer for a train or a car traveling at 100 mi/hr to stop

Physics

2 answers:

Pani-rosa [81]2 years ago

6 0

It typically take longer for a heavier object to slow down therefor, a train will take more time. <span />

Allushta [10]2 years ago

3 0

<h3><u>Answer;</u></h3>

A train will take longer time to stop compared to a car.

<h3><u>Explanation;</u></h3>

For a body in motion to stop a braking force at a given distance is required for the body to loose kinetic energy.
The the stopping distance of a car depends on the breaking force and the the mass of the moving body. The stopping distance will depend on the kinetic energy and the breaking force acting to stop the motion of a body.
<em><u>The mass of a moving body determines its kinetic energy, and also determines the resultant force according to the newton seconds law of motion . Therefore, mass determines the breaking force and the stopping distance, such that a big body in motion will require more force to stop and will take a longer stopping distance and time.</u></em>

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Answer:

The minimum stopping distance when the car is moving at

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We know by equation of motion that,

$v^{2}=u^{2}+2\cdot a \cdot s$

Where, v= final velocity m/sec

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Case 1

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Case 2

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s = 285.94 m

Hence the minimum stopping distance when the car is moving at

29.0 m/sec = 285.94 m

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