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Preeti reached the metro station and fou...

Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time `t_1`. On other days. if she remains stationary on the moving escalater, then the escalator takes her up in time `t_2`. The time taken by her to walk up on the moving escalator will be:

A

`(t_1+t_2)/2`

B

`(t_1t_2)/(t_2-t_1)`

C

`(t_1t_2)/(t_2+t_1)`

D

`(t_1-t_2)`

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TARGET PUBLICATION-Motion in a plane-Exercise
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  2. A body travelling along a straight line path travels first half of the...

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  4. A particle moves along x-axis obeying the equation x=t(t-1)(t-2), wher...

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  5. If the velocity of a particle is v = At + Bt^2. where A and B are cons...

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  6. The displacement of a body along x-axis depends on time as x= sqrt (t+...

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  7. The displacement of a particle moving in a straight line is given by t...

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  8. An object moving with a speed of 6.25 m/s, is decelerated at a rate gi...

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  9. A particle is moving with constant acceleration and v1, v2 and v3 are ...

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  10. Two cars P and Q start from a point at the same time in a straight lin...

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  11. An object moving with a speed of 6.25 m/s, is decelerated at a rate gi...

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  12. A particle first accelerates from rest and then retards to rest during...

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  13. A car accelerate from rest with 2 m/s^2 on a straight line path and t...

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  14. The velocity of an object moving in straight line path is given as a f...

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  15. Consider a car initially at rest, starts to move along a straight road...

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  16. The velocity-time graph for two bodies A and Bare shown. Then the acce...

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  17. A particle shows distance-time curve as shown in the figure. The maxim...

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  18. The nature of graph drawn for a freely falling body with time on the x...

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  19. A body is thrown vertically upwards. Which one of the following graphs...

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  20. All the graphs below are intended to represent the same motion. One of...

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