Find the velocity of the rain drops with respect to the man?

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Homework Help Overview

The problem involves determining the velocity of raindrops with respect to a man walking on a level road, given the man's walking speed and the vertical speed of the raindrops. The discussion centers around understanding vector components and their representation in a diagram.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants express confusion regarding the diagram and the meaning of the vector components, particularly the notation '-v man.street'. There are inquiries about the implications of the minus sign in the context of the vector diagram.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the vector representation and the underlying assumptions. Some express a desire for a more guided exploration rather than direct answers.

Contextual Notes

There is a focus on the interpretation of vector directions and components, with specific attention to how the horizontal component of the rain relates to the man's motion. The discussion reflects a need for deeper understanding of vector notation in this context.

Indranil
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Q. A man is walking on a level road at a speed of 3.0 km/h. Raindrops fall vertically at a speed of 4.0 km/h. Find the velocity of the raindrops with respect to the man,
A. The explanation is below:
Here I don't understand the diagram. Why the resultant vector left downward is between -v man.street and v rain.street? what does '-v man.street' denote on the diagram?
 

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Indranil said:
Q. A man is walking on a level road at a speed of 3.0 km/h. Raindrops fall vertically at a speed of 4.0 km/h. Find the velocity of the raindrops with respect to the man,
A. The explanation is below:
Here I don't understand the diagram. Why the resultant vector left downward is between -v man.street and v rain.street?
what do you think?
what does '-v man.street' denote on the diagram?
What does a minus sign mean on ANY vector diagram that is oriented with the +x direction as the positive vector direction?
 
Indranil said:
what does '-v man.street' denote on the diagram?

The horizontal component of the rain relative to the man.

If +velocity is to the right (the direction of the man's walk), then the horizontal component of rain relative to the man is in the opposite direction; minus.
 
Whatever happened to the Socratic Method, as opposed to just spoon-feeding the answer?
 
phinds said:
Whatever happened to the Socratic Method, as opposed to just spoon-feeding the answer?
Whoops. You're right.
 
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