Question

For a particle's journey, the magnitude of average
velocity is 20 m/s. Which among the following cannot be the value of
average speed?
A.24 m/s
B.15 m/s
C.20 m/s
D.31 m/s​

Answer 1

Answer:

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.

2

1

t.5.t+(25−2t).5t=500=>t

2

−25t+100

=>t=5

so option B is answer.