Two Equal Masses Travel in Opposite Directions with Equal Speed

question 81

Multiple Choice

Two equal masses travel in opposite directions with equal speed.If they collide in a perfectly elastic collision,then,just after the collision,their velocities will be

• A)zero.
• B)equal to their original velocities.
• C)equal in magnitude but opposite in direction to their original velocities.
• D)less in magnitude and in the same direction as their original velocities.
• E)less in magnitude and opposite in direction to their original velocities.

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Definitions:

Radical Activists

Individuals or groups who take extreme actions to effect change in pursuit of their political, social, or environmental goals.

Laboratory Experiments

Research methods that involve the manipulation of one or more variables in a controlled environment to observe the effects on behavior.

Confounding Variables

These are variables that the researcher failed to control, or eliminate, damaging the internal validity of an experiment by providing a possible alternative explanation for outcomes.

External Validity

How broadly the outcomes of a research project can be extended to different contexts and populations.