A horizontal force of 450 N is applied to a stationary woodenbox in one directio

Question

A horizontal force of 450 N is applied to a stationary woodenbox in one direction, and a 700 N horizontal force is applied inthe opposite direction. What additional force is needed for box toremain stationary? ____N A group of college students eager to ge to Flordia on a springbreak drove the 631 mi trip with only minimum stops. They computedtheir average speed for the trip to be 55.8 mi/h. How many hoursdid the trip take? ______H A horizontal force of 450 N is applied to a stationary woodenbox in one direction, and a 700 N horizontal force is applied inthe opposite direction. What additional force is needed for box toremain stationary? ____N A group of college students eager to ge to Flordia on a springbreak drove the 631 mi trip with only minimum stops. They computedtheir average speed for the trip to be 55.8 mi/h. How many hoursdid the trip take? ______H

Explanation / Answer

The applied force and the frictional force is equal then the bax remains stationary on one side the force is F = 700N    on the other side    f   = 450 N     additional force need for box to remain stationary F =   700 -450    = 250 N    distance   d = 631 mi    average speed   v = 55.8 mi /h    time   t = ?          v =distance   / time         time   t =   d / v                    =   631 / 55.8                       = 11.3 hours

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