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A car A trave...

Question

A car A travelling on a straight level road with a uniform speed of $60 k m / h$ . it is followed by another car B which is moving with a speed of $70 k m / h$ , when the distance between them is $2.5 k m$ , the car B is given a deceleration of $20 k m / h^{2}$ . after how much time will B catch up with A .

A

1 h r

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B

1 / 2 h r

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C

1 / 4 h r

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D

1 / 8 h r

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Solution

The correct option is B $1 / 2 h r$
Hence, the ans is $1 / 2 h o u r s$ .

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