A Particle of Mass M Moving at 5

question 72

Multiple Choice

A particle of mass m moving at 5.0 m/s in the positive x direction makes a glancing elastic collision with a particle of mass 2m that is at rest before the collision.After the collision,m moves off at an angle of 45º to the x axis and 2m moves off at 60º to the x axis.The speed of m after the collision is

• A)4.5 m/s
• B)2.5 m/s
• C)3.3 m/s
• D)1.8 m/s
• E)1.1 m/s

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Definitions:

Object Permanence

The understanding that objects continue to exist even when they cannot be observed, seen as a key developmental milestone in infants.

Imitate

To copy or mimic the actions, behaviors, or appearances of someone or something.

Accidentally

Occurring without deliberate intention; happening by chance.

Formula

A method or set of principles that are used for solving a problem, or a specific type of nutritional drink for infants.