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Alexandra001
18.09.2019 •
Physics
Agirl at an airport rolls a ball north on a moving walking that moves east. if the ball’s speed with respect to the walkway is 0.15m/s and the walkway moves at a speed of 1.50m/s, what is the velocity of the ball relative to the ground?
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Ответ:
The velocity of the ball relative to the ground is 1.5m/s at 5.7° North East.
Given the data in the question;
Velocity of walkway with respect to the ground along east direction;To determine the velocity of the ball relative to the ground.
From Parallelogram law:
Resultant velocity;![v^2 = v_1^2 + v_2^2](/tpl/images/0238/9551/cad53.png)
So,![v = \sqrt{v_1^2 + v_2^2}](/tpl/images/0238/9551/de693.png)
In this case,![v_{bg} = \sqrt{v_{wg}^2 + v_{bw}^2}](/tpl/images/0238/9551/58d8e.png)
We substitute in our values
For the direction
Therefore, the velocity of the ball relative to the ground is 1.5m/s at 5.7° North East.
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Ответ:
We have to add two vectors.
Vector #1: 0.15 m/s north
Vector #2: 1.50 m/s east
Their sum:
Magnitude: √(0.15² + 1.50²)
Magnitude = √(0.0225+2.25)
Magnitude = √2.2725
Magnitude = 1.5075 m/s
Direction = arctan(0.15/1.50) north of east
Direction = 5.71° north of east
Ответ:
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Explanation:
A word that indicates the possession of the noun to a person/a few people. The possessive adjectives are my, our, your, his, their, her, and its.