Answer: 3 m/s
Explanation:
1) the instantaneous speed is the slop at t = 6 secs
2) since its a straight line, the slop of the line is the speed and its constant.
the slope is approximately 3 m/s.
20|
15| |
10| | d = 15
5| |
0| |
1 2 3 4 5 6| 7 8
t = 5
So the formula for speed is
speed = distance/time
S = 15/5
S = 3 m/s