A Child in a Sled Is Moving with a Speed

question 66

Multiple Choice

A child in a sled is moving with a speed of 4.0 m/s across an iced over pond.If the total mass of the sled-child system is 85.0 kg,what magnitude of the average force is required to bring the sled to rest in 10.0 s?

• A)14 N
• B)24 N
• C)34 N
• D)44 N
• E)54 N

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Definitions:

Transtheoretical Model

A psychological framework that analyzes an individual's readiness to change and identifies stages of change to address a variety of behaviors.

Problem-Focused Coping

Coping mechanisms that aim directly at mitigating or solving a stressor rather than solely managing emotional responses to the stressor.

Emotion-Focused Coping

A coping strategy that involves managing or reducing the emotional distress associated with a situation.

Subjective Probability

An individual's personal estimation or belief about how likely an event is to occur.