11. A driver travelling at 100 km h¹ on a straight road suddenly sees a cow 32 m aheadand immediately applies the brake. His braking deceleration is 6 m s². Calculate thespeed when the car hits the cow. [19.7 m s'¹]minimum time that he should apply the brake so that he does not hitthe cow. [4.6 s](i)(ii)12. The car continues to travel at a speed of 72 km h¹¹ when it reaches the highway.Suddenly the driver steps on the brake when he saw a fallen tree on the road at 60.0 min front of him. The car experiences a deceleration of 5 ms2. Will the car stop before ithits the tree?13. A marble is tossed vertically upward to the air from the surface of the ground with aninitial velocity of 15 m s¹. Calculatea)the maximum height achieved by the marble. [11.47 m]b)the time taken by the marble to reach the maximum height. [1.53 s]

Given data: Initial velocity (u) = 100 km/h Displacement (d) = 32 m Acceleration (a) = -6 m/s2…

A driver travelling at 100 km h¹ on a straight road suddenly sees a cow 32 m ahead and immediately applies the brake. His braking deceleration is 6 m s². Calculate the speed when the car hits the cow. [19.7 m s'¹] minimum time that he should apply the brake so that he does not hit the cow. [4.6 s] (i) (ii)

A driver travelling at 100 km h¹ on a straight road suddenly sees a cow 32 m ahead and immediately applies the brake. His braking deceleration is 6 m s². Calculate the speed when the car hits the cow. [19.7 m s'¹] minimum time that he should apply the brake so that he does not hit the cow. [4.6 s] (i) (ii)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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