Mathematics, 08.06.2021 01:40 djdjd11
6. (A12) A river is 400m wide, and the water in it flows from the west towards the east at a speed
of 4m/s. Sarah is on the south side of the river and can row her boat at a speed of 5m/s through
the water.
a. If Sarah points her boats directly across the river, what is her resultant velocity with
respect to the shore (include both the magnitude and direction)? You must include a
diagram with your answer.
b. How far to the east does she has she travelled from her starting position when she
reaches the north shore?
C.
If she wants to have her boat to land directly north of where she started, what direction
should she point her boat?
d. If she points her boat in the direction you found in (c), how long will it take Sarah to get
across the river? (the equation d = v. t may be helpful)
Answers: 3
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Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?
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Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine,t, the number lf tokens jason bought
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6. (A12) A river is 400m wide, and the water in it flows from the west towards the east at a speed...
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