Every car, you know , is fitted with an odometer, whichn indicates the actual distance travelled by the car, In going from Ambala to Delhi taken was 9 hours, ltbRgt Read the above passage and answer the following questins: (i) What are the values of avetage speed and avetage velocity over the jouney ? (ii) What is more relevant : average speed or avetage velocity ? (iii) What are the paracticla mplications of this study ?

Every car, you know , is fitted with an odometer, whichn indicates the

1.	Every car, you know , is fitted with an odometer, whichn indicates the actual distance travelled by the car, In going from Ambala to Delhi taken was 9 hours, ltbRgt Read the above passage and answer the following questins: (i) What are the values of avetage speed and avetage velocity over the jouney ? (ii) What is more relevant : average speed or avetage velocity ? (iii) What are the paracticla mplications of this study ?
Answer» 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.

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