1.

Ram travels distance x with uniform velocity u and thereafter, distance y with uniform velocity v in the same direction. (a) What is his average speed? (2) (b) If he travels 1/4th of the journey with speed 40 m/s and 3/4thof the journey with speed60 m/s along a straight line path, what is the average speed of Ram during the entire journey?

Answer»

Average SPEED is always given by Total timeTotal distance Let's assume that distance between X and Y is DSO, TIME TAKEN to go from X to Y will be V u d And time taken to go from Y to X will be v d d So, average speed will be v u d + v d d 2d = v d +v u 2v d v u



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