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Byju's Answer

Standard XII

Physics

Velocity in 2D

A boy runs al...

Question

A boy runs along a straight path for the first half of the distance with a velocity $v_{1}$ and the second half of the distance with a velocity $v_{2}$ . The average velocity V is given by

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Solution

The correct option is A
=+

$V_{a n g} = \frac{T o t a l d i s p l a c e m e n t}{T o t a l t i m e}$

$V = \frac{d}{\frac{d}{_{2} V_{1}} + \frac{d}{_{2} V_{2}}}$

After some rearranging we get

$\Rightarrow \frac{2}{V} = \frac{1}{V_{1}} + \frac{1}{V_{2}}$

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A boy runs along a straight path for the first half of the distance with a velocity v1 and the second half of the distance with a velocity v2. The average velocity V is given by

The correct option is A =+ Vang=Total displacementTotal time V=dd2V1+d2V2 After some rearranging we get ⇒2V=1V1+1V2

A boy runs along a straight path for the first half of the distance with a velocity $v_{1}$ and the second half of the distance with a velocity $v_{2}$ . The average velocity V is given by

The correct option is A
=+

$V_{a n g} = \frac{T o t a l d i s p l a c e m e n t}{T o t a l t i m e}$

$V = \frac{d}{\frac{d}{_{2} V_{1}} + \frac{d}{_{2} V_{2}}}$

After some rearranging we get

$\Rightarrow \frac{2}{V} = \frac{1}{V_{1}} + \frac{1}{V_{2}}$