NEET 2017 | Motion in a Straight Line Question 13 | Physics

Preeti reached the metro station and found that the escalator was not working. She walked up the sationary escalator in time t₁. On another days, if she remains stationary on the the moving escalator, then the escalator takes her up in time t₂. The time taken by her to walk up on the moving escalator will be

$${{{t_1}{t_2}} \over {{t_2} - {t_1}}}$$

$${{{t_1}{t_2}} \over {{t_2} + {t_1}}}$$

$${{t_1} - {t_2}}$$

$${{{t_1} + {t_2}} \over 2}$$

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

Two cars P and Q start from a point at the same time in a straight line and their positions are represented by
x_P(t) = (at + bt²) and x_Q(t) = (ft $$-$$ t²).

At what time do the cars have the same velocity ?

$${{a - f} \over {1 + b}}$$

$${{a + f} \over {2\left( {b - 1} \right)}}$$

$${{a + f} \over {2\left( {1 + b} \right)}}$$

$${{f - a} \over {2\left( {1 + b} \right)}}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

If the velocity of a particle is v = At + Bt², where A and B are constants, then the distance travelled by it between 1 s and 2 s is

$${3 \over 2}A + {7 \over 3}B$$

$${A \over 2} + {B \over 3}$$

$${3 \over 2}A + 4B$$

$$3A + 7B$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to $$v\left( x \right) = \beta {x^{ - 2n}}$$, where $$\beta $$ and n are constants and x is the position of the particle. The acceleration of the particle as a function of x, is given by

$$ - 2{\beta ^2}{x^{ - 2n + 1}}$$

$$ - 2n{\beta ^2}{e^{ - 4n + 1}}$$

$$ - 2n{\beta ^2}{x^{ - 2n - 1}}$$

$$ - 2n{\beta ^2}{x^{ - 4n - 1}}$$

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution