Mechanics> a car travels equal distances with succes...

a car travels equal distances with successive speeds of 10, 30, 60 and 20 kilometre per hour to go from one point to another point along a straight line its average speed is

Munaza , 9 Years ago

Grade 12th pass

1 Answers

Vikas TU

Let x be the distance in each case.

x = 10*t1

and

x = 30*t2

and

x = 60*t3

and

x = 20*t4

and

t = t1 + t2 + t3 + t4

avg. speed = total distance / total time

= 4x/t => 4x/(x/10 + x/30 + x/60 + x/20)

=> 4/((6+2+1+3)/60))

=> 4*60/12

=> 20 Km/hr.

Last Activity: 9 Years ago

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Mechanics> a car travels equal distances with succes...

a car travels equal distances with successive speeds of 10, 30, 60 and 20 kilometre per hour to go from one point to another point along a straight line its average speed is

Munaza , 9 Years ago

Vikas TU

LIVE ONLINE CLASSES

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