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chapter- 13 Notion and Time, NCERT Ouestion's Ausuer, oue" 3 A Simple pendulum takes 32 s to Lomplete, 20 oscillations. what is the time period of, the pendulum?, Date, Page, Number of oscillations, Total fime taken to Lomplete 20 oscillations, 20, =D325, Time period, Total Time, Number of oscillations, 32, 1.6 sec., 20, ouey -The distance between tuo Stations is, 240 kma A train takes 4 Howrs to cover, this distance lalculate the Speed ok the, train ., Shis, Distance between the two stations = 240 km., Time taken, 4h, LDistance, Timetaken, 240, = 60 km/h, Speed, oud"5. The odometer of a, when the llack shows the time ob:30 AN., what is the distance moved, it at ob:50 AM, the adometer reading has, ianged to 57336.0 km2 calculate the, Speed of the lar in kuhmin during this, Aime, "Express the speed in, car reads 57321.0km, Ireading,, kmlty aso.

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Distance, Speed X Time, 2 x g00, 1800m., Distance, 18, 10, = li8 km., Hence the distance between house and, school is li8 km., oue'7 Show the shape of the distauce -tfme, graph far the motion in the fallowing, Cases.-, | A Lar moing with a loustant Speed., A car parked on a side road., ti, Time, Time +, A car is moving with, a lonstant sped., A car parked, on a Side, Distance ->

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oui'll. Suppose the, two photographs, Shown in, anid Fig 2 had been taken at an f-, of to Cseconds. # a distance of 100 met, shown 1, calculate the speed o, the blue o, Aus, Speed, by, 1 an in these photograp., Distance, Time, 100m., 1o sec., = 10€m, or, Fig shous the distance - fime graph, the motion f two vehicles A and B., o, one of them is moning faster?, one of them is moui, shst 'A' is moufng, faster., 1, B., Time →, Distance