X = -2.7 m/s.
Y = 1.3 m/s.
Q2.
a. Tan A = Y/X = 1.3/-2.7 = -0.48148.
A = -25.7 m/s = 25.7o N. of W. = 64.3o
W. of N. = Direction.
Vr = Sqrt(X^2 + Y^2) = Sqrt(2.7^2+1.3^2)= 3.0 m/s = Resultant velocity.
Dr = Sqrt(20^2 + 41.5^2) = 46.1 m. = Resultant distance.
Dr = Vr*T = 46.1 m.
T = 46.1/Vr = 46.1/3 = 15.4 s.
b. d = 20*Tan64.3 = 41.5 m. Downstream.
A swimmer swims perpendicular to the bank of a 20.0 m wide river at a velocity of
1.3 m/s. Suppose the river has a current of 2.7 m/s [W].
(a) How long does it take the swimmer to reach the other shore?
(b) How far downstream does the swimmer land from his intended location?
3 answers
how did you fins 41.5??
(2.7)(41.50)
=41.5
=41.5