A car accelerates uniformly from 3.5 m/s to 12.5 m/s in 4.5 s. What is the magnitude of the acceleration?
a) 0.3 m/s²
b) 0.5 m/s²
c) 2.0 m/s²
d) 3.6 m/s²

c) 2.0 m/s^2.

Step-by-step explanation:

Acceleration = change of velocity / time

= (12.5 - 3.5)/4.5

= 9/4.5

= 2.0 m/s^2.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.