A van moves through 30 km with a speed of 60 km/h and next 40 km with a speed of 120 km/h calculate average speed
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average speed = total distance / total time taken
= s1 + s2 / t1 + t2
= s1 + s2/ (s1/v1 + s2/v2)
= 30 + 40 /(30/60 + 40/120)
=70 /(1/2 + 1/3 )
= 70/ (5/6 )
=(70 x 6) / 5
=420/5
=84 km/hr
hope this was helpful
= s1 + s2 / t1 + t2
= s1 + s2/ (s1/v1 + s2/v2)
= 30 + 40 /(30/60 + 40/120)
=70 /(1/2 + 1/3 )
= 70/ (5/6 )
=(70 x 6) / 5
=420/5
=84 km/hr
hope this was helpful
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