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Jlenok [28]
2 years ago
13

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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lara31 [8.8K]

Answer:

a) Team A will win.

b) The losing team will accelerate towards the middle line with 0.01 m/s^{2}

Explanation:

Given that Team-A pulls with a force , F_{1} = 50N

and Team-B pulls with a force , F_{1} = 45N

∵ F_{1} > F_{2}

The rope will move in the direction of force F_{1}.

∴ Team-A will win.

b) Considering both the teams as one system of total mass , m = 246+253 = 499 kg

Net force on the system , F = F_{1} - F_{2} = 50-45 = 5N

Applying Newtons first law to the system ,

F = ma , where 'a' is the acceleration of the system.

Since , both the teams are connected by the same rope , their acceleration would be the same.

∴ 5 = 499×a

∴ a = 0.01 m/s^{2}

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