j) When is the particle SPEEDING UP? SLOWING DOWN? Use labelled s(t) , v(t) and a(t) number lines below. [7] USE INTERVAL NOTATION. s(t) v (t ) a(t) SPEEDING UP: SLOWING DOWN: k) . When is the particle moving away from the origin? [2]MCV4U i) Sketch labelled graphs of s(t) , v(t) and a(t) on the grid below. LABEL ALL INTERCEPTS. S ( 1 ) A Quisiro 70 - 5 (+) = 215- 27,+ 211 1+ - 190 [6] So+ 30+ 20 - 10 - 3 20 8 9 D v ( 2) velocity 60 50 -+ hot 30 2 -207 - 30 - SC- - 60 30 20 - 10 - -10- 1 2 3 /4 5 6 7 8 9 -207 - 30+ 3