One Second After a Ball Rolls Off the Edge of a Horizontal

question 5

Multiple Choice

One second after a ball rolls off the edge of a horizontal surface at a speed of 10 m/s,

• A)its vertical component of velocity is 10 m/s.
• B)its speed is about 14 m/s.
• C)both of these
• D)none of the above

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Definitions:

Assessments

The evaluation or estimation of the nature, ability, or quality of something.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, typically denoted as alpha.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution without violating any constraint.

Equal-variances T-test

A statistical test used to compare the means of two groups, assuming that both groups have the same variance.