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A person driving a car with a speed 72 k...

A person driving a car with a speed 72 km/h suddenly sees a boy crossing the road. If the distance moved by car, before the person applies brakes is 5 m, the reaction time of the person is

A

0.5 s

B

0.10 s

C

10 s

D

0.25 s

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-MOTION IN A STRAIGHT LINE-EXERCISE
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  4. A body moving with uniform retardation covers 3 km before its speed is...

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  5. A ball is thrown vertically upward with a velocity u from the top of a...

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  6. The displacement of a body is given by s=(1)/(2)g t^(2) where g is acc...

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  7. A ball is thrown vertically upward from the top of a tower with a spee...

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  8. A ball falls freely from rest. The ratio of the distance travelled in ...

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  9. A ball is thrown vertically upward attains a maximum height of 45 m. T...

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  10. A car travelling with a velocity of 80 km/h slowed down to 40 km/h in ...

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  11. A person driving a car with a speed 72 km/h suddenly sees a boy crossi...

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  12. Two cars are moving is one a same line dimension in opposite direction...

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  13. Two objects A and B are moving with velocities v(A) and v(B) respectiv...

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  14. Two objects A and B are moving with velocities v(A) and v(B) respectiv...

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  15. The relative velocity of two objects A and B is 10 m/s. If the velocit...

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  16. Two train are moving in a straight line in the same direction with a s...

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  17. Which one of the following represents displacement-time graph of two o...

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  18. A boat takes 2 hours to travel 8 km and back in still water lake. With...

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  19. Two objects A and B are moving with velocities v(A) and v(B) respectiv...

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