A Particle Has an Initial Velocity of 4

question 38

Multiple Choice

A particle has an initial velocity of 4.8 m/s toward the south and a final velocity of 7.1 m/s toward the east. The particle was subject to a constant acceleration for 0.25 s. The magnitude and the direction of the acceleration must have been

• A) 2.3 m/s² at 34.1º north of east.
• B) 8.6 m/s² at 34.1º north of east.
• C) 34 m/s² at 34.1º north of east.
• D) 34 m/s² at 34.1º south of east.
• E) 8.6 m/s² at 34.1º south of east.

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Definitions:

Sample Size

The amount of observations or data points obtained from a population for statistical analysis purposes.

Level Of Significance

The threshold for rejecting the null hypothesis in a statistical test, often denoted by alpha and representing the risk of a Type I error.

One-Tail

It refers to tests of significance that determine if there is a relationship or a difference in only one direction, either greater than or less than, but not both.

Test Statistic

A calculated value used in statistical hypothesis testing to determine whether to reject the null hypothesis.