for 4 seconds.After both movements are completed, how far is the train located from its starting point.(what is the trains final location, not the total distance that it traveled.)
a.18m
b.19m
c.20m
d.22m
2006-07-13 12:54:10 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
18 m
2006-07-13 12:59:17 · answer #1 · answered by physandchemteach 7 · 0⤊ 0⤋
this can be a really common displacement difficulty. The prepare strikes in a one dimensional line at a set cost for x volume of seconds and then strikes backwards, in that similar line. the area it travels is going to be diverse from the displacement that it's going to truly travels. The prepare is going a million m/s for 20 seconds, so as meaning it is going 20 meters in a unmarried route. Then it is going backwards at 0.5 m/s for 4 seconds, meaning it traveled 2 meters in the damaging route. upload both figures mutually like you ought to to locate entire distance traveled, except you want to think concerning the damaging or constructive fee of the circulation. 20 m + (-2 m) = 18m displacement. If that would not help your idea procedure, imagine about it like a graph. If an merchandise strikes 20 areas to the right on the x-axis and then strikes decrease back in route of the inspiration 2 areas, absolutely the fee of the area remote from the inspiration is your answer, 18 areas.
2016-10-14 10:48:22 · answer #2 · answered by ? 4 · 0⤊ 0⤋
18 miles from its starting point.
2006-07-13 13:00:37 · answer #3 · answered by Coring 2 · 0⤊ 0⤋
the answer is the first one, 18m
2006-07-13 13:07:24 · answer #4 · answered by shelster10 3 · 0⤊ 0⤋
Hi, oops I was looking for the washroom !!!!!!!!!
2006-07-13 17:18:04 · answer #5 · answered by Anonymous · 0⤊ 0⤋