SATHEE: Motion in a Plane - Result Question 45

Motion in a Plane - Result Question 45

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

[2006]

(a) $0, 10 m / s$

(b) $10 m / s, 10 m / s$

(d) 0,0

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Solution:

(a) Distance covered in one circular loop $=$ $2 π r$

$= 2 \times 3.14 \times 100 = 628 m$

avg Speed $= \frac{628}{62.8} = 10 m / s e c$

Displacement in one circular loop $= 0$

avg Velocity $= \frac{0}{time} = 0$

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Motion in a Plane - Result Question 45

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

Solution:

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