6. A car accelerates from 18 km/h to 36 km/h in 10 s. Calculate its acceleration inn (1) km/h? (ii) m/s? ans.10
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hi this is hadi, lets start
1) acceleration = final velocity - initial velocity / time
a = 36 - 18 / 10 = 9 / 10
when 9 is in km/h then convert it in to m/s which is 9 divided by 3.6 which is 2.5 m/s, lets keep going
2.5 / 10 seconds = 0.25 m/s so that's the answer for the the second part and in km/h then multiply by 3.6 that is 0.25 x 3.6 = and that is 0.9 km/h
so 1) 0.9 km/h
2)0.25 m/s
thanks
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