A 90-Kg Halfback Running North with a Speed of 10

question 6

Multiple Choice

A 90-kg halfback running north with a speed of 10 m/s is tackled by a 120-kg opponent running south at 5.0 m/s.The collision is perfectly inelastic.Compute the velocity of the two players just after the tackle.

• A) 1.4 m/s south
• B) 2.8 m/s south
• C) 2.8 m/s north
• D) 1.4 m/s north

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Definitions:

Autocorrelation

The correlation of a signal with a delayed copy of itself as a function of delay, often used in time series analysis.

Graphing

The process of representing data visually using charts, plots, or diagrams to identify trends, patterns, or relationships.

Residuals

The differences between observed and predicted values in a statistical model, representing the error in predictions.

Homoscedasticity

The condition in which the variance of the residuals or errors in a regression analysis or statistical model is constant across all levels of the independent variable.