A car travels a distance S on a straight road in two hours and then returns to the starting point in the next three hours. Its average velocity is

$\frac{S}{5}$

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$\frac{2 S}{5}$

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$\frac{S}{2} + \frac{S}{3}$

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None of the above

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Solution

The correct option is D
None of the above

$A v e r a g e v e l o c i t y = \frac{T o t a l d i s p l a c e m e n t}{T i m e} = \frac{0}{2 + 3} = 0$

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A car travels a distance S on a straight road in two hours and then returns to the starting point in the next three hours. Its average velocity is

A car travels a distance S on a straight road in two hours and then returns to the starting point in the next three hours. Its average velocity is

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