A Ball Rolls Over the Edge of a Platform with Only

question 146

Multiple Choice

A ball rolls over the edge of a platform with only a horizontal velocity.The height of the platform is 1.6 m and the horizontal range of the ball from the base of the platform is 20 m.What is the horizontal velocity of the ball just before it touches the ground? Neglect air.

• A)35 m/s
• B)9.8 m/s
• C)20 m/s
• D)4.9 m/s
• E)70 m/s

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Definitions:

Standard Deviations

A numerical metric that calculates the degree of spread or distribution of a data set values around the average.

IQ Scores

Numerical measurements typically used to assess human intelligence, derived from standardized tests.

Normally Distributed

Describes a symmetrical, bell-shaped distribution of data points around the mean, where most observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.

Standard Deviation

Standard deviation is a statistical measure that quantifies the amount of variability or dispersion of a set of data points around the mean.