VFY² = 166.6 A cannon is crossing a lake at a velocity of 18 km/h [N 30° W] the current is this lake is going at 6 km/h [E] while the wind is also pushing the cannon at 3 km/h SE. If it took the cannon to cross the lake in 20 minutes. What is the displacement of the cannon?

VFY² = 166.6 A cannon is crossing a lake at a velocity of 18 km/h [N 30° W] the current is this lake is going at 6 km/h [E] while the wind is also pushing the cannon at 3 km/h SE. If it took the cannon to cross the lake in 20 minutes. What is the displacement of the cannon?

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter2: Vectors

Section: Chapter Questions

Problem 9CQ: When a 10,000-rn runner competing on a 400-rn track crosses the finish line, what is the runner’s...

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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

VFY² = 166.6
A cannon is crossing a lake at a velocity of 18 km/h [N 30° W] the current is this lake is
going at 6 km/h [E] while the wind is also pushing the cannon at 3 km/h SE. If it took
the cannon to cross the lake in 20 minutes. What is the displacement of the cannon?
1-18500 30
-3 sin 45

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