Answered: 3. Aball is thrown vertically upward…

3. Aball is thrown vertically upward with a speed of 15.0 m/s from the edge of a 20.0 m tall building. The ball hits the ground 4s later. Calculate the average velocity (in m/s) of the bll.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 5PE: (a) Calculate Earth's average speed relative to the Sun. (b) What is its average velocity over a...

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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. Aball is thrown vertically upward with a speed of 15.0 m/s frorn the edge of a 20.0 m tall building. The ball hits the
ground 4: loter. Calculate the overage volocity (in m/s) of the ball.
V,= 15 m/s
20 m
ground

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