Your friends wants to hit you with a water balloon. You are running North at a velocity of 12.8 m/s, your friend is running East of North at 14.7 m/s at an angle of 20.7 degrees. At what speed and angle should they throw the water balloon in order for it to hit you?

Your friends wants to hit you with a water balloon. You are running North at a velocity of 12.8 m/s, your friend is running East of North at 14.7 m/s at an angle of 20.7 degrees. At what speed and angle should they throw the water balloon in order for it to hit you?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 5STP

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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.

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