A person moves to the East for 200m and then to the South for 500m in 30min. Find: a) the total distance traveled
b) the displacement
c) the average speed in
m/s
d) the average velocity in m/hr

i will answer your question if you answer mine

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)