A. The criss-crossing path of a flying bug
B. A round-trip to school and back
C. A horse galloping in a field
D. A trip, first to the moon, then onto Mars
2006-09-18 06:46:47 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
As long as the starting point becomes the destination of the second trip and neither location moves, any trip "there" and "back again" has an average velocity of zero.
Velocity is a vector quantity (meaning that direction is important). Any positive motion in one direction becomes a negative in the opposite direction. It would make no difference if the exact same path "there" and "back again" were taken. As long as the final resting place is the starting place, the average velocity is zero.
2006-09-18 06:52:25 · answer #1 · answered by Richard 7 · 71⤊ 0⤋
Any path that returns to the starting point after a certain period of time will have a time-averaged velocity of zero during that period.
2006-09-18 13:59:18 · answer #2 · answered by cosmo 7 · 0⤊ 0⤋
B. Round trip to school and back, 100% sure
2006-09-18 13:48:16 · answer #3 · answered by Liya J 3 · 0⤊ 0⤋
Velocity = Displacement / Time ------>
Disaplcement = zero in B, hence it is the answer
2006-09-18 13:54:53 · answer #4 · answered by WaterGuy 3 · 0⤊ 0⤋
Round trip to school and back.
Displacement = Zero.
coz' object returns to its original position.
V=D/T=0/T=0
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2006-09-18 13:50:09 · answer #5 · answered by bankman 2 · 0⤊ 0⤋
b
2006-09-18 14:02:56 · answer #6 · answered by Anonymous · 0⤊ 0⤋
A:
2006-09-18 13:51:33 · answer #7 · answered by alfonso 5 · 0⤊ 0⤋
B
2006-09-18 13:49:05 · answer #8 · answered by a_blue_grey_mist 7 · 0⤊ 0⤋
ALL
2006-09-18 13:58:30 · answer #9 · answered by ron 2 · 0⤊ 0⤋