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A cyclist is riding a circular path of radius 5m with a speed of 10m/sec. What is the change in velocity when he has travelled through a semi-circle?
Thank you! Can you explain the formula you used again?
Sure! The formula Vf^2 = Vi^2 + 2ad is a rearanged version of the equation that relates velocity, acceleration, and displacement. It is derived from the equation d = Vi*t + 1/2*a*t^2, which is used to calculate the displacement of an object with constant acceleration a over a time interval t. In this particular case, the cyclist is not accelerating, so the acceleration is zero and the formula simplifies to Vf = Vi + d/t.