Question

A car travels a distance 100m with a constant acceleration and average velocity of 20ms. The final velocity acquired by the car is 25ms. Find the initial velocity and acceleration of car.

Answer 1

Average velocity V Avg = (v+u)/2 ⇒ 20 = (25+u)/2 ⇒ u = 40 -25 ⇒ u = 15 m/s a=(v2 – u2)/2s ⇒ a=(252 – 152)/(2 ⨯ 100) ⇒a= (625 -225)/200 ⇒ a = 2 m/s2

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