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A car is moving along a straight road wi...

A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a distance with velocity `30km//h` and `40 km//h` respectively. The velocity of the car midway between P and Q is

A

33.3km/h

B

`20sqrt2 km//h`

C

`25sqrt2 km//h`

D

`35km//h`

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