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CBSE Class 9 Answered

regarding motion
Asked by hemant2020 | 19 Apr, 2009, 02:42: PM
answered-by-expert Expert Answer

Average speed = total distance / total time

a) A to B : average speed = 300/150 = 2m/s    { 2min 30 sec = 150sec}
b) A to C : average speed = (300+100)/(150+60) = 400/210 = 1.90m/s

Average velocity= total displacements / total time

a) A to B : average velocity = 2m/s (same as earlier)
b) A to B : average velocity = (300-100)/(150+60) = 0.952m/s

Answered by | 30 Apr, 2009, 01:59: PM

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