A Block Is on a Frictionless Horizontal Table, on Earth

question 27

Multiple Choice

A block is on a frictionless horizontal table, on earth. This block accelerates at 1.9 m/s² when a 90 N horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/s2. What is the weight of the block on the moon?

• A) 77 N
• B) 67 N
• C) 58 N
• D) 48 N
• E) 39 N

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Definitions:

Hypotheses

Proposed explanations made on the basis of limited evidence as a starting point for further investigation, often tested statistically.

Confounding Variables

External variables that can affect the outcome of an experiment, making it difficult to establish a clear cause-and-effect relationship.

Random Assignment

The assignment of participants to categories of an independent variable such that each participant has an equal chance of being assigned to each category.

Systematic Observation

An observational method that involves structured, consistent procedures for recording and analyzing phenomena.