If the Displacement of an Object Is Given in SI

question 45

Multiple Choice

If the displacement of an object is given in SI units by Δx = −3t + 4t ²,at t = 2 s its velocity and acceleration are,respectively:

• A)positive,positive.
• B)positive,negative.
• C)negative,negative.
• D)negative,positive.

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Definitions:

Extrinsic Motivation

Motivation driven by external rewards such as money, fame, grades, and praise.

Social Conditioning

The process through which individuals learn norms, values, behaviors, and social skills appropriate to their society through experience and interaction.

Yerkes-Dodson Law

A psychological principle stating that performance increases with physiological or mental arousal, but only up to a point, after which performance begins to decrease.

Arousal

A state of being physiologically alert and responsive to stimuli, often leading to increased physical activity and cognitive awareness.