The diagram below shows the speed - time graph of the motion of an athlete during a race.
Speed
la ms
14
12
10
8
6
4
2
12
13
9 10
4
6
5
7 8
2
0 1
Time la seconds
(a) Using the graph determine,
(i) the MAXIMUM speed
(ii) the number of seconds for which the speed was constant
(iii) the TOTAL distance covered by the athlete during the race.
(b) During which time period of the race was,
(i) the speed of the athlete increasing
(ii) the speed of the athlete decreasing
(iii) the acceleration of the athlete zero?​