An odds ratio of 0.5 for a feature means:

When using a Pipeline with StandardScaler, what happens when you call pipe.predict(X_test)?

If two colliding athletes have equal and opposite momentum, their final velocity after collision will be zero.

Which of the following best explains why a ball does not bounce back to its original height?

Increasing the normal reaction force will increase friction.

Provided no external forces act on the system, momentum is always conserved in a collision, even if energy is lost. 

In sklearn’s LogisticRegression, the C parameter is:

What are the two primary factors affecting friction?

Why is it easier to keep an object moving than to start it moving?

A perfectly elastic collision has a coefficient of restitution equal to 0.