FREE Trial

A 920-kg sports car collides into the rear end of a 2300-kg SUV stopped at a red

Question:

A 920-kg sports car collides into the rear end of a 2300-kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.8m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.80, calculates the speed of the sports car at impact. What was that speed?
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Answer rating: 54% (11 reviews)

Use conservation of momentum in one dimension Call the direction of the sports cars ...View the full answer


answer-question-section
Answered By
tutor-profile-image
Gaurav Soni
Teaching was always an area where I can pursue my passion. I used to teach my friends and junior during my school and college life. After completing my professional qualification (chartered accountancy) and before joining my job, I also joined an organization for teaching and guidance to my juniors. I had also written some articles during my internship which later got published. apart from that, I have also given some presentations on certain amendments/complex issues in various forms. Linkedin profile link: https://www.linkedin.com/in/gaurav-soni-38067110a
5.00+ 7+ Reviews 13+ Question Solved
Related Book For  book-img-for-question
Physics Principles with Applications

Physics Principles with Applications

ISBN: 978-0321762429

7th edition

Authors: Douglas C. Giancoli

See More Books
Question Posted:
See More Questions

Related Video

Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.

Students also viewed these Mechanics questions

An Introduction To Envelopes 1st Edition - ISBN: 1119422930 - Free Book