Explanation Given: Length of truck = 20 m To pass the truck car has to travel = 40 m Initial speed of truck = 18 m/s Initial speed of car = 18 m/s Acceleration of car = 0.60 m/s 2 Estimated distance of the other car = 500 m Speed of the other car = 25 m/s Formula Used: Second equation of motion: s = u t + 1 2 a t 2 Where, u is the initial velocity, t is the time, a is the acceleration and s is the displacement. Calculations: Car can pass the truck when s c = s t + 40 s c → distance covered by car s t → distance covered by truck Truck is travelling with 18 m/s speed . Therefore so, s t = 18 t ( ‘ t ’ time taken ) At the same time, car is accelerating with 0.60 m/s 2 at an initial speed of 18 m/s . s = u t + 1 2 a t 2 s c = 18 t + 1 2 × ( 0

7th Edition

ISBN: 9780321733627

Author: Douglas C. Giancoli

Publisher: PEARSON

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Chapter 2, Problem 74GP

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