A car is moving along a straight road with uniform, acceleration. It passes through two points 𝑃 and 𝑄 separated by a distance with velocities 30kmh −1 and 40kmh −1 respectively. The velocity of car midway between 𝑃 and 𝑄 is

Question : A car is moving along a straight road with uniform, acceleration. It passes through two points 𝑃 and 𝑄 separated by a distance with velocities 30kmh −1 and 40kmh −1 respectively. The velocity of car midway between 𝑃 and 𝑄 is

(A) 33.3kmh^{-1}

(B) 1kmh^{-1}

(C) 2\sqrt{2}kmh^{-1}

(D) 35.35kmh^{-1}

Answer : option (D)

Solution :

A car is moving along a straight road with uniform, acceleration. It passes through two points 𝑃 and 𝑄 separated by a distance with velocities 30kmh −1 and 40kmh −1 respectively. The velocity of car midway between 𝑃 and 𝑄 is
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