At 10 am a ship is at location S, position vector (10 i + 7 j) km, and is moving with velocity (10 i + 2 j) km/h. If the ship continues with this velocity what will be its position vector at 10 pm?
position vector (km) =
Vector Applications?
2015-10-27 2:43 am
回答 (1)
2015-10-27 10:01 am
✔ 最佳答案
10 am ~ 10 pm = 12 hrr
= S + v t
= 10 i + 7 j + ( 10 i + 2 j )*12
= 10 i + 7 j + 120 i + 24 j
= 130 i + 31 j
Ans: ( 130 i + 31 j ) km
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https://hk.answers.yahoo.com/question/index?qid=20151026184317AAAnlLH