railway RRB Technician Grade 1 Mock Test 2024 Basic Science and Engineering Speed and Velocity

A person driving a light car at 60 kmph finds a child on the road 30 meter ahead. He immediately applied the brake to stop the car with in 5 m of the child. Find the retardation of the car.

1
1.89 m/s2
2
2.77 m/s2
3
4.63 m/s2
4
5.56 m/s2
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