Vector Problem: Clarity on Part (f) & Why 2.15 Only

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Homework Help Overview

The discussion revolves around a vector problem, specifically focusing on part (f) of the question. Participants are examining two time values, ##t=2.79## and ##t=2.15##, and their relevance to the solution provided in the mark scheme.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify why the mark scheme favors ##t=2.15## over ##t=2.79##, despite both values satisfying part (e). Questions are raised about which time value occurs first and the implications of that in the context of the problem.

Discussion Status

The discussion is ongoing, with participants seeking clarity on the reasoning behind the selection of the time value. Some have expressed confusion regarding the implications of the two time values and their validity in the problem context.

Contextual Notes

There is an indication that the mark scheme may have specific criteria for selecting the appropriate time value, which is currently under examination. Participants are also considering the order of the time values in relation to the problem's requirements.

chwala
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Homework Statement
kindly see attached problem
Relevant Equations
vectors
1619311735493.png

1619311779300.png
i need clarity on part (f) only...we have two values for ##t## i.e ## t=2.79## and ##t=2.15##, ...the mark scheme says solution is:

1619311920632.png


why ##2.15## only, i have tried substituting the two values back into the problem and they both satisfy part ##e##
 
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I need help on part ##f## only.
 
Which of the two time values that you got is first?
 
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FactChecker said:
Which of the two time values that you got is first?
ok i see quite tricky...thanks mate. :cool:
 

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