Can an Object's Velocity Change Direction When Its Acceleration Is

question 10

Multiple Choice

Can an object's velocity change direction when its acceleration is constant? Support your answer with an example.

• A)No, this is not possible because it is always speeding up.
• B)No, this is not possible because it is always slowing up.
• C)No, this is not possible because it is always speeding up or always slowing down, but it can never turn around.
• D)Yes, this is possible, and a rock thrown straight up is an example.
• E)Yes, this is possible, and a car that starts from rest, speeds up, slows to a stop, and then backs up is an example.

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Definitions:

Randomized Block Experiment

An experimental design that groups subjects based on certain characteristics to reduce variation in the response variable, with random assignment within blocks.

Within-Treatments Variation

The variability observed among individuals within the same group or treatment category in an experiment.

F-test

A statistical test used to compare the variances of two populations or to test the hypothesis that multiple population means are equal.

World Malaria Report

An annual publication by the World Health Organization that provides a comprehensive update on global and regional malaria data and trends.