1. a girl attempts to swim directly across a stream 15m wide. when she reaches the other side, she is 15m downstream. determine the magnitude of her displacement.
solve it and explain to me WHY, please!!! thank you!!!
physics problem
2006-10-24 2:15 pm
回答 (1)
2006-10-24 2:49 pm
✔ 最佳答案
By Pyth.Theorem,d = √15^2+15^2
= 21.2132m
= 21.2m (3.s.f)
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