Question

see the question given above​

Answer 1

Hi,


(i) Initial speed = 10km/hr(because at t = 0 hours, the speed was 10 km/hr)
(ii) The maximum speed is 35km/hr(because it is the highest point in the graph)
(iii) b to c (because the speed at this particular part neither increased nor decreased)
(iv) c to d (because at this particular part the speed decreased, speed decreasing would mean retardation and the graph from c to d is irregular, therefore it is varying with time)
(v)Always in a graph the distance would be the area
Here if u calculate the area then
[(3 * 35) - (1/2 * 3 * 25)] + ( 5 * 35 )
= (105 - 37.5) + (175)
= 67.5 + 175
=242.5km


Hope this helps

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