   Chapter 6, Problem 74AP

Chapter
Section
Textbook Problem

A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 2m moving initially in the same direction as the car at a lower speed v2. (a) What is the speed Vf of the two vehicles immediately after the collision? (b) What is the change in kinetic energy of the car-truck system in the collision?

(a)

To determine
The speed of the two vehicles immediately after the collision.

Explanation

Given info: The mass of the car is m . The velocity of the car v1 . The mass of the truck is 2m . The velocity of the truck is v2 . The car and the truck move in the same direction.

Explanation:

From conservation of momentum,

Pinitial=Pfinal

• Pinitial is the initial momentum
• Pfinal is the final momentum

The formula to calculate momentum is given by,

P=mv

• m is the mass
• v is the velocity

Hence from the conservation of momentum,

(

(b)

To determine
The change in kinetic energy of the car-truck system in the collision.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

To overload a muscle is never productive. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Why does a stars life expectancy depend on its mass?

Horizons: Exploring the Universe (MindTap Course List)

What is physically exchanged during crossing over?

Human Heredity: Principles and Issues (MindTap Course List) 