Answer:
The pairs are;
t, Â Â Â Â v
2, Â Â Â 96
4, Â Â Â 32
5, Â Â Â 0
6, Â Â Â -32
7, Â Â Â -64
9, Â Â -128
Step-by-step explanation:
The given equation is f(t) = -16·t² + 160·t
We have, the velocity, v = d(f(t))/dt = d(-16·t² + 160·t)/dt = -32·t + 160
Which gives;
t, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â v Â
0,   -32×(0) + 160 =  160
1,   -32×(1) + 160 =   128
2,   -32×(2) + 160 =   96
3,   -32×(3) + 160 =   64
4,   -32×(4) + 160 =   32
5,   -32×(5) + 160 =   0
6,   -32×(6) + 160 =  -32
7,   -32×(7) + 160 =   -64
8,   -32×(8) + 160 =   -96
9,   -32×(9) + 160 =  -128
The given velocity values are;
96, -64, 32, 0, -128, -32 Â which correspond to 2, 7, 4, 5, 9, 6
The pairs are;
t, Â Â Â Â v
2, Â Â Â 96
4, Â Â Â 32
5, Â Â Â 0
6, Â Â Â -32
7, Â Â Â -64
9, Â Â -128