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isabella4141
12.12.2019 •
Mathematics
Abird starts from the ground, flies at a certain speed for 5 seconds, and lands on a tree branch. the vector representing its position is . it continues to fly in the same direction and at the same speed for 5 more seconds, and lands on another branch. what vector represents its new position from the ground?
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Answers on questions: Mathematics
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Ответ:
Ответ:
Answer with explanation:
Let the Speed at which bird is flying = u m/s
⇒Distance = Speed × Time
So,After 5 Seconds , position of Bird = 5 u meter
After,10 Seconds , position of Bird = 10 u meter
If ground is considered as two dimensional plane,and time is represented on X axis(i plane) and Distance on Y axis(j plane),,then
Position of bird after 5 seconds= (5, 5 u)=5 i + 5 u jFirst Branch
Position of bird after 10 seconds= (10, 10 u)=10 i+10 u jSecond Branch(New Position)
Change in position of bird =Final Position - Initial Position
=1 0 i + 10 u j - 5 i -5 u j
= 5 i +5 u j
Ответ:
A
Step-by-step explanation:
I believe the answer is A, not sure though. GL.