Answer:
i think its the vertex
Step-by-step explanation:
Stuck on the same thing, tried reviewing and reviewing but now I’ll just try finding the answer key
Answer:
Her centripetal acceleration during the turn at each end of the track is 
Step-by-step explanation:
Total distance covered in one round , D= 400 m
Time taken to cover one round , T = 1 min 40 s = 100 sec
Speed of runner , 
Now centripetal acceleration is given by

where 


Thus her centripetal acceleration during the turn at each end of the track is 
A vertical angles and Angles 1 & 3