Relative Velocity: a Swimmer Heading Directly Across a River 200

question 3

Essay

Relative velocity: A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s, during which time she is swept downstream 480 m.
(a) How fast can she swim in still water?
(b) What is the speed of the current?

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Definitions:

Flexible Budget Report

This is a financial report that adjusts to different levels of activity and provides a more accurate comparison of budgeted and actual performance.

Actual Activity

Actual activity refers to the real, measured amount of work completed or resources consumed within a given time frame, often compared against planned or budgeted levels in various contexts, such as accounting or project management.

Static Budget

A projection of budget data at one level of activity.

Actual Activity

This refers to the measure of the real amount of production activity or work completed in a specified period.