A 1000-Kg Automobile Moving with a Speed of 24 M/s

question 13

Multiple Choice

A 1000-kg automobile moving with a speed of 24 m/s collides with a 500-kg car initially at rest. If the two stick together, what is the velocity (in m/s) of the two cars after the collision relative to an automobile moving in the same direction at 15 m/s?

• A) 14
• B) 16
• C) 24
• D) 48
• E) 1.0

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Definitions:

Caloric Intake

The total number of calories consumed through foods and beverages over a certain period.

Exercise

Exercise is physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body, improving health, and maintaining fitness.

Concurrent Validity

Evidence that test scores are related to an external source that can be measured at around the same time the test is being given (“here and now” validity). This is a type of criterion-related validity.

Predictive Validity

The extent to which a test score or instrument can predict the performance or outcomes on relevant future measures.