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A driver at deewans motors is testing a new model car with a speedometercaliberated to read m/s rather than km/h . the following series of speedometer reading was obtained during a test run along a long straight raod time(s) 0 1 3 5 7 9 11 13 15 17 19 speed (m/s) 0 0 4 7 10 13 17 22 23 26 29 a) compute the average acceleration during each 2 sec intervals . is the acceleration constant?is it constant during any part of the test run? b) make a (v-t) graph of the data, using scale of 1 cm=1s horizontally and 1 cm=2m/s vertically .draw a smooth curve through the plotted point .by measuring the slope of yours curve,find the instanteaneous acceleration at t=6s,8s and 25s. |
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