3. A canoeist travels 3.5 km across a lake in a direction 30 degrees N of E and then 2 km in a direction 65 degrees N of W. Using cosine and sine law. Calculate the displacement from the straight point, determine its direction at an angle with respect to the x-axis.

3. A canoeist travels 3.5 km across a lake in a direction 30 degrees N of E and then 2 km in a direction 65 degrees N of W. Using cosine and sine law. Calculate the displacement from the straight point, determine its direction at an angle with respect to the x-axis.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 20P: A bird files straight northeast a distance of 95.0 km for 3.0 h. With the x -axis due east and the y...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

3. A canoeist travels 3.5 km across a lake in a direction 30 degrees N of E and
then 2 km in a direction 65 degrees N of W. Using cosine and sine law,
Calculate the displacement from the straight point, detemine its direction at
an angle with respect to the x-axis.

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