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www.GOALias.blogspot.com1313 Motion and TimeIn Class VI, you learnt about differenttypes of motions. You learnt that amotion could be along a straight line,it could be circular or periodic. Can yourecall these three types of motions?Table 13.1 gives some commonexamples of motions. Identify the typeof motion in each case.Table 13.1 Some examples ofdifferent types of motionExample ofmotionSoldiers in amarch pastBullock cartmoving on astraight roadHands of anathlete in a racePedal of a bicyclein motionMotion of the eartharound the sunMotion of a swingMotion of apendulumType of motionAlong a straightline/circular/periodicIt is common experience that themotion of some objects is slow while thatof some others is fast.13.1 S13.1 SLOWOR FASTWe know that some vehicles move fasterthan others. Even the same vehicle maymove faster or slower at different times.Make a list of ten objects moving alonga straight path. Group the motion ofthese objects as slow and fast. How didyou decide which object is moving slowand which one is moving fast.If vehicles are moving on a road inthe same direction, we can easily tellwhich one of them is moving faster thanthe other.Activity 13.1Look at Fig. 13.1. It shows the positionof some vehicles moving on a road inthe same direction at some instant oftime. Now look at Fig. 13.2. It shows theposition of the same vehicles after sometime. From your observation of the twofigures, answer the following questions:Which vehicle is moving the fastestof all? Which one of them is moving theslowest of all?The distance moved by objects in agiven interval of time can help us todecide which one is faster or slower. Forexample, imagine that you have gone tosee off your friend at the bus stand.Suppose you start pedalling your bicycleat the same time as the bus begins tomove. The distance covered by you after