The 1600 kg car has a velocity of vthe driver sees an obstacle 175 m away, in front of the car. It takes 0.8 s for him to react and lock the brake100 km/h whencausing the car to skid.The coefficient of kinetic friction between the tires and the roadis p = 0.25. Find the best correct statement(s) from the following for this situation:,= 100 km/hSelect one or more:Work done by the frictionis equal to 617.4 KWThe working forces are ficion and the wejght.The car will stop just in front of the pbstacle without hittunguiThe car will hit the obstadle.The car skid for the distance of 157.34m,

Write the initial velocity of car. vi=100 km/h=100 km/h×518 m/s1 km/h=27.77 m/s Calculate the…

100 km/h Select one or more: Work done by the friction is equal to 617.4 kW The working forces are friction and the weight. The car will stop just in front of the obstacle without hitting. The car will hit the obstacle. The car skid for the distance of 157.34 m. 口ロ

100 km/h Select one or more: Work done by the friction is equal to 617.4 kW The working forces are friction and the weight. The car will stop just in front of the obstacle without hitting. The car will hit the obstacle. The car skid for the distance of 157.34 m. 口ロ

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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Concept explainers

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.

Question

The 1600 kg car has a velocity of v
the driver sees an obstacle 175 m away, in front of the car. It takes 0.8 s for him to react and lock the brake
100 km/h when
causing the car to skid.
The coefficient of kinetic friction between the tires and the road
is p = 0.25. Find the best correct statement(s) from the following for this situation:
,= 100 km/h
Select one or more:
Work done by the frictionis equal to 617.4 KW
The working forces are ficion and the wejght.
The car will stop just in front of the pbstacle without hittungui
The car will hit the obstadle.
The car skid for the distance of 157.34m,

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