Kinematics Question 357

Question: If a train travelling at 20m/s it’s to be brought to rest in a distance of 200 m, then it’s retardation should be

Options:

A) 1m/s2

B) 2m/s2

C) 10m/s2

D) 20m/s2

Show Answer

Answer:

Correct Answer: A

Solution:

v2u2= 2aS
a=u22aS=(20)22×200=1m/s2



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