AIPMT 2012 Prelims | Motion in a Straight Line Question 19 | Physics

The motion of a particle along a straight line is described by equation x = 8 + 12t $$-$$ t³ where x is in metre and t in second. The retardation of the particle when its velocity becomes zero is

24 m s^$$-$$2

zero

6 m s^$$-$$2

12 m s^$$-$$2

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A particle covers half of its total distance with speed v₁ and the rest half distance with speed v₂. Its average speed during the complete journey is

$${{{v_1} + {v_2}} \over 2}$$

$${{{v_1}{v_2}} \over {{v_1} + {v_2}}}$$

$${{2{v_1}{v_2}} \over {{v_1} + {v_2}}}$$

$${{v_1^2v_2^2} \over {v_1^2 + v_2^2}}$$

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A boy standing at the top of a tower of 20 m height drops a stone. Assuming g = 10 m s^$$-$$2, the velocity with which it hits the ground is

10.0 m/s

20.0 m/s

40.0 m/s

5.0 m/s

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v. The two balls meet at t = 18 s. What is the value of v?
(Take g = 10 m/s²)

75 m/s

55 m/s

40 m/s

60 m/s

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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