Which segment of this graph shows a decreasing velocity? F 80 D. El 60 Position (m) с B 20 10 20 30 40 50 60 70 80 90 100 Time (s) OA A to B B. B to C C. C to D D. D to E O E. E to F

E to F

Explanation:

We know that v = dx/dt

and a = d²x/dt²

Decreasing velocity means deceleration or negative acceleration,

therefore d²x/dt²<0

i.e the portion where the graph is having its curvature downwards like an inverted u, from graph E to F portion looks like that.

Therefore in the portion E to F velocity decreases.

im not exactly sure but i think its b!

2b2t

explanation:

2b2t