A body moves from point A (3,6) to point B (11,12) to point C (15,15). What is the average speed of the body along the given path if the total time taken is 100s?

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Editor">Editor Staff asked 1 year ago

A body moves from point A (3,6) to point B (11,12) to point C (15,15). What is the average speed of the body along the given path if the total time taken is 100s?
 
(a) 0.15 units/s
 
(b) 1.5 units/s
 
(c) 15 units/s
 
(d) 0.0015 units/s
 
I have been asked this question in a national level competition.
 
My question is based upon Motion in a Plane with Constant Acceleration in portion Motion in a Plane of Physics – Class 11
Select the correct answer from above options 
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Editor">Editor Staff answered 1 year ago

Correct option is (a) 0.15 units/s
 
Best explanation: The distance between A and B is 10 units. The distance between B and C is 5 units. Hence, the total distance is 15 units. The total time taken is 100 s. Average speed = total distance/total time taken = 15/100 = 0.15 units/s.

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