At one instant a bicyclist is 40 m due east of a park\'s flagpole, going due sou
ID: 2043226 • Letter: A
Question
At one instant a bicyclist is 40 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 8 s later, the cyclist is 30 m due north of the flagpole, going due east with a speed of 16 m/s. For the cyclist in this 8 s interval, find each of the following.
(a) displacement
magnitude__________ m
direction____________ ° north of west
(b) average velocity
magnitude__________ m
direction____________ ° north of west
(c) average acceleration
magnitude__________ m
direction____________ ° north of west
Explanation / Answer
(a) displacement is a straight line from beginning to end.In this case, this line would be the hypotenuse of a triangle withsides of 40 m (east ) and 30 m (north).So
.
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