- #1
missrikku
Hello, I am having trouble deciphering the following problem:
You start from rest at point i: First, moving at 30 degrees north of due east:
1. increase your speed at 0.400 m/s^2 for 6.00s
okay, with this information i did:
V = Vo + at --> V = 0 + (0.400)(6.00) = 2.40 m/s
V = d/t --> 2.40 = d/6.00 --> d = 14.4 m
2. with whatever speed you then have, move for 8.00 s
Okay, that "whatever speed" I found to be 2.40 m/s. Moving along for 8.00 s, I was thinking that I could do:
V = d/t --> 2.40 = d/ 8.00 -- > d = 19.2 m
3. then slow at 0.400 m/s^2 for 6.00s.
Okay, here is where I get confused. I thought that in parts 1 AND 2, you were still going at the same speed and thus same acceleration. So, why or how could you SLOW at 0.400 m/s^2 when that was the a given in 1?
Could someone explain to me what exactly is going on? thanks!
You start from rest at point i: First, moving at 30 degrees north of due east:
1. increase your speed at 0.400 m/s^2 for 6.00s
okay, with this information i did:
V = Vo + at --> V = 0 + (0.400)(6.00) = 2.40 m/s
V = d/t --> 2.40 = d/6.00 --> d = 14.4 m
2. with whatever speed you then have, move for 8.00 s
Okay, that "whatever speed" I found to be 2.40 m/s. Moving along for 8.00 s, I was thinking that I could do:
V = d/t --> 2.40 = d/ 8.00 -- > d = 19.2 m
3. then slow at 0.400 m/s^2 for 6.00s.
Okay, here is where I get confused. I thought that in parts 1 AND 2, you were still going at the same speed and thus same acceleration. So, why or how could you SLOW at 0.400 m/s^2 when that was the a given in 1?
Could someone explain to me what exactly is going on? thanks!