NEET 2020 Phase 1 | Motion in a Straight Line Question 11 | Physics

A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is : (g = 10 m/s²)

340 m

320 m

300 m

360 m

NEET 2019

MCQ (Single Correct Answer)

-1

The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. north is given by :

0^o

45^o west

30^o west

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 ?

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

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

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

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

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NEET Subjects

Biology

Zoology

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