Question

Video data are given for the ankle angle during walking in the table below. What is the

angular velocity of the ankle at frame 25 when calculated using the first central    

  distance method?

Video Frame	Time (s)	Ankle angle (°)
24	0.200	1.98
25	0.208	3.54
26	0.216	5.00
27	0.224	6.15

A 0.7 °/s

B 17.0 °/s

C 173.8 °/s

D 188.8 °/s

E 195 °/s

Answer 1