Question

Refer to the graph given
The magnitude of the speed during t = 3 s to t = 4.5 s is​

Answer 1

Explanation:

average velocity is 25m/s so distance will be 25×20=500m

now finding area of the graph between velocity and time graph we get 

area of two triangles + area of rectangle.

2.21t.5.t+(25−2t).5t=500=>t2−25t+100

=>t=5

Answer 2

Answer:

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