A 100-Kg Man on Ice Skates Pushes a 25-Kg Boy

question 47

Multiple Choice

A 100-kg man on ice skates pushes a 25-kg boy, also on skates, with a force of 250 N. As a result,

• A) both the man and the boy will have an acceleration of magnitude 2 m/s².
• B) only the boy will have an acceleration of magnitude 2 m/s².
• C) only the man will have an acceleration of magnitude 10 m/s².
• D) the man will have an acceleration of magnitude 2.5 m/s².
• E) the heavier man will be stationary.

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Definitions:

Wisdom of the Crowd

The phenomenon that collective judgment or decision of a diverse group of individuals is often more accurate than that of any single member of the group.

Ringelmann Effect

The phenomenon where individual productivity decreases as the size of a group increases, often due to coordination and motivation issues.

Anonymity

The state of being anonymous, where an individual's identity is not known or revealed.

Social Facilitation

The tendency for people to perform differently when in the presence of others than when alone, typically improving on simple tasks and performing poorly on complex tasks.