Q3/A subway traveling at 40 km/hr decelerates as it reaches point A and slows down with a constant deceleration. Its reduced velocity is noted to be 30 km/hr as it passes point C. A vehicle which is moving at 25 km/hr passes point B at the same instant that the subway reaches point A. In an unwise effort to beat the subway to the crossing, the driver "steps on the gas." (a) Calculate the constant acceleration Car a that the car must have in order to beat subway to the crossing by 2 sec and (b) find the velocity v of the car as it reaches the crossing. E- ALSHIRQAT subway A 10.5 km 0.5 km B 1.3 km

Q3/A subway traveling at 40 km/hr decelerates as it reaches point A and slows down with a constant deceleration. Its reduced velocity is noted to be 30 km/hr as it passes point C. A vehicle which is moving at 25 km/hr passes point B at the same instant that the subway reaches point A. In an unwise effort to beat the subway to the crossing, the driver "steps on the gas." (a) Calculate the constant acceleration Car a that the car must have in order to beat subway to the crossing by 2 sec and (b) find the velocity v of the car as it reaches the crossing. E- ALSHIRQAT subway A 10.5 km 0.5 km B 1.3 km

Name: Q3/A subway traveling at 40 km/hrdecelerates as it reaches point A an
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Description: Q3/A subway traveling at 40 km/hrdecelerates as it reaches point A andslows down with a constantdeceleration. Its reduced velocity isnoted to be 30 km/hr as it passespoint C. A vehicle which is movingat 25 km/hr passes point B at thesame instant tha

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 32P: A Lockheed Martin F-35 II lighting jet takes off from an aircraft carrier with a runway length of 90...

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(a) Can the instantaneous velocity of an object at an instant of time ever be greater in magnitude than the average velocity over a lime interval containing that instant? (b) Can it ever be less?
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