Average speed= (total distance travelled )/( time taken )
` = (( 16124 - 15 674) km)/( 9 hr) = ( 450 ) /4 km //hr = 50 km // hr`
Average velocity = `( displacement /(time )`
As journey starting from Ambala eneds at Ambals, therefore, displacement = 0`
:. Average velocity = zero
(ii) In a journey, average velocity is calculated only theoretically . Average speed is what matters actually.
(ii) As averave speed = ( distance travelled)/(time taken),
therefore, to increase average speed, giben distance should be travelled in least posssibe time. It implies that if tow starions (A) and (B) between which we have to travel, are connected by different routs, we should choose the rout of monimum distance along which road condition are really good so that tiem taken is small.