From a hot air balloon at an elevation of 310 m, a stone is dropped. Two seconds later another stone is thrown vertically upward from the ground with a velocity of 70 m/s, when and where the stones pass each other?

From a hot air balloon at an elevation of 310 m, a stone is dropped. Two seconds later another stone is thrown vertically upward from the ground with a velocity of 70 m/s, when and where the stones pass each other?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 15CQ: Give an example in which velocity is zero yet acceleration is not.

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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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From a hot air balloon at an elevation of 310 m, a stone is dropped. Two seconds later
another stone is thrown vertically upward from the ground with a velocity of 70 m/s,
when and where the stones pass each other?

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