AIPMT 2007 | Motion in a Straight Line Question 29 | Physics

AIPMT 2007

MCQ (Single Correct Answer)

-1

A car moves from X to Y with a uniform speed v_u and returns to Y with a uniform speed v_d. The average speed for this round trip is

$$\sqrt {{v_u}{v_d}} $$

$${{{v_d}{v_u}} \over {{v_d} + {v_u}}}$$

$${{{v_u} + {v_d}} \over 2}$$

$${{2{v_d}{v_u}} \over {{v_d} + {v_u}}}$$

AIPMT 2007

MCQ (Single Correct Answer)

-1

The positions x of a particle with respect to time t along x-axis is given by x = 9t² $$-$$ t³ where x is in metres and t in seconds. What will be the position of this particle when it achieves maximum speed along the + x direction ?

54 m

81 m

24 m

32 m

AIPMT 2006

MCQ (Single Correct Answer)

-1

A particle moves along a straight line OX. At a time t (in seconds) the distance x (in metres) of the particle from O is given by x = 40 + 12t $$-$$ t³. How long would the particle travel before coming to rest ?

16 m

24 m

40 m

56 m

AIPMT 2006

MCQ (Single Correct Answer)

-1

A car runs at a constant speed on a circular track of radius 100 m, taking 62.8 seconds for every circular lap. The average velocity and average speed for each circular lap respectively is

10 m/s, 0

0, 0

0, 10 m/s

10 m/s, 10 m/s.

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