WQ4.16 1/1 point (graded) You want to swim across a 1200m-wide stream as shown. You can maintain a constant speed vs = 0.4m/s with respect to the water. The water in the stream moves with speed Uw = 0.5 m/s as shown. D A I - If you swim at an angle 0 = 100° as shown, what will be your horizontal distance D with respect to your starting point on the other side? Give you answer in meters. 1311.62 V 1311.62
WQ4.11 3/3 points (graded) Assume that an object moves in counter-clockwise direction on a circular path. Some displacement vectors are shown below: ra Tc To Ta a) Transcribe the above figure (i.e. copy it on a piece of paper), and draw two vectors for the displacement in the diagram below: A+1 = 76 - Fa amd AF2 = Fa - Fc. Which way do the vectors you've drawn point? Once you have drawn your vectors, click "Show Answer" to see the correct vectors. 0 Clockwise. Counter-clockwise.
b) Consider now the average velocity defined by: 01 = "6-Te and 02 = "dc . Assume that the speed is constant and only the direction changes. Which of the two velocity vectors is more 'tangential' at position ra (more perpendicular to T'a ) and r, respectively? C V1 at position ra is more tangential. V2 at position re is more tangential. > c) Will the velocity vector u be exactly tangential in the limit At -> 0? Yes. C No. v