An impatient driver approaches an intersection controlled by a two- way stop sign. The through traffic is quite heavy, with an average gap of 5 sec. If this driver can achieve an acceleration of du/dt = (1-02u) m/sec? and his perception-reaction time is 0.75 sec, determine if he can safely clear the intersection. Assume that the width of the intersection is 6 m, and his car is 5 m long. %!

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.