A Projectile Fired from a Gun Has Initial Horizontal and Vertical

question 68

Multiple Choice

A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively.
-Approximately how long does it take the projectile to reach the highest point in its trajectory?

• A)1 s
• B)2 s
• C)4 s
• D)8 s
• E)16 s

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Definitions:

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a confidence interval within which the true value lies.

σ

Symbol representing the standard deviation of a population in statistics.

Population Mean

The average of a set of values from the entire population, representing the central tendency of the total data set.

Confidence Intervals

Intervals that are calculated from the observed data and provide a range that likely includes the true parameter of the population, expressed at a certain confidence level.