A machine has an efficiency of 60%. If the machine is required to overcome a load of 30N with a force of 20N, calculate its mech
1 answer:
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Answer:
The deceleration is
Explanation:
From the question we are told that
The distance of the car from the crossing is
The speed is
The reaction time of the engineer is
Generally the distance covered during the reaction time is
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Generally distance of the car from the crossing after the engineer reacts is
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Generally from kinematic equation
Here v is the final velocity of the car which is 0 m/s
So
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