A 30-Kg Block Slides on a Frictionless 20° Inclined Plane

question 5

Multiple Choice

A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?

• A) 2.0 m/s² down the incline
• B) 5.3 m/s² up the incline
• C) 2.0 m/s² up the incline
• D) 3.9 m/s² down the incline
• E) 3.9 m/s² up the incline

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Definitions:

Stratified Random Sampling

A probability sampling method in which the population is first divided into strata and a simple random sample is then taken from each stratum.

Strata

Subsets of a population that are known to be homogeneous with respect to some characteristic, used in stratified sampling.

Frame

A listing of the elements the sample will be selected from.

Infinite Population

A theoretical concept where the size of the population is limitless, affecting statistical sampling methods.