Car a Rear Ends Car B, Which Has Twice the Mass

question 77

Multiple Choice

Car A rear ends Car B, which has twice the mass of A, on an icy road at a speed low enough so that the collision is essentially elastic. Car B is stopped at a light when it is struck. Car A has mass m and speed v before the collision. After the collision

• A) each car has half the momentum.
• B) car A stops and car B has momentum mv.
• C) car A stops and car B has momentum 2mv.
• D) the momentum of car B is four times as great in magnitude as that of car A.
• E) each car has half of the kinetic energy.

---

Definitions:

Log Odds

The logarithm of the odds ratio, used in logistic regression to describe the relationship between a binary dependent variable and one or more independent variables.

Mammogram

A radiographic examination of the breasts to screen for and diagnose breast cancer.

Multiple Logistic Regression

A statistical analysis method used to predict the outcome of a categorical dependent variable based on one or more predictor variables.

Dependent/Outcome Variable

The variable in an experimental setting that is affected by manipulations in the independent variable; it represents the outcome of interest.