Question

A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is (a) 5 m/s2
(b) 2 m/s2
(c) 3.6 m/s2
(d) 1 m/s2

Answer 1

Answer:

hii

your answer is here. !

Explanation:

=> Given =

=> The initial velocity u =36 km/h=10 m/s

=> the Final velocity v =72 Km/h = 20 m/s

=> The time period t = 10 s

=> u is the initial velocity

=> t is the time period 

=> putting the value  of v,u,t in the equation, we get

=> 20 -10 =a ×10

=> a = 1 m/s

option D is right answer !

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Answer 2

Answer:

3.6m/s2

Explanation:

v=u+at 720000=360000+10(a). 720000-360000=10(a). Ans.360000=10(a). divide 10 to360000 and answere came 3.6m/s2