Question

Average velocity of an object after completing a circle of 5 m radius in 5 seconds.
a)2π
b)π
c)zero
d)none of these​

Answer 1

Given:

An object after completing a circle of 5 m radius in 5 seconds.

To find:

Average velocity ?

Calculation:

Average velocity is defined ratio of total displacement and total time to cover that displacement.

$\sf \: avg. \: v = \dfrac{total \: displacement}{total \: time}$

• Now, when object returns back to its starting position, it's displacement will be zero.

$\sf \implies \: avg. \: v = \dfrac{0}{total \: time}$

$\sf \implies \: avg. \: v = 0$

So, average velocity is zero.

OPTION c) is correct !

Answer 2

${\large{\underline{\underline{\pmb{\frak{Question :-}}}}}}$

Average velocity of an object after completing a circle of 5 m radius in 5 seconds.

❒ 2π

❒ π

❒ zero

❒ none of these

${\large{\underline{\underline{\pmb{\frak{Answer :-}}}}}}$

$\sf \: average \: velocity = \dfrac{total \: displacement}{total \: time}$

Now,

$\sf \implies \: average \: velocity = \dfrac{0}{total \: time}$

$\sf \implies \: average \: velocity = 0$

$\bold\red{So, \: average \: velocity \: is \: zero}$

$\quad\bigstar{\underline{\boxed{\red{\sf{OPTION \: c) \: is \: correct}}}}}$

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