During a Collision with a Wall, the Velocity of a 0.200-Kg

question 29

Multiple Choice

During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wall to 12.0 m/s away from the wall. If the time the ball was in contact with the wall was 60.0 ms, what was the magnitude of the average force applied to the ball?

• A) 40.0 N
• B) 107 N
• C) 16.7 N
• D) 26.7 N
• E) 13.3 N

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Definitions:

Concurrent Validity

A measure of how well a particular test correlates with a previously validated measure taken at the same time.

Construct Validity

The extent to which a test or measurement tool accurately measures the theoretical construct it is intended to measure.

Content Validity

The extent to which a test measures all aspects of the concept it intends to measure.

Predictive Validity

The extent to which a test or measure accurately predicts future performance or outcomes.