The engine of a car produces an acceleration of $4 m s^{- 2}$ in a car, if this car pulls another car of the same mass, what will be the acceleration produced?

8 m s^{- 2}

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2 m s^{- 2}

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4 m s^{- 2}

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1 / 2 m s^{- 2}

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Solution

The correct option is B $2 m s^{- 2}$
When car pulls another car, the mass of the system will double.
Since the acceleration is inversely proportional to acceleration, so the acceleration will be half i.e $4 / 2 = 2 m / s^{2}$

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