NEET 2017 | Motion in a Straight Line Question 9 | Physics

NEET 2017

MCQ (Single Correct Answer)

-1

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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