A Mass of 0

question 105

Multiple Choice

A mass of 0.50 kg is attached to a massless spring with a spring constant k = 600 N/m see figure above) . The system rests on a level, friction-free surface and is initially at rest. A second mass of 0.20 kg makes an elastic head-on collision with the mass attached to the spring; thereafter, the oscillating system vibrates with an amplitude of 0.25 m. What was the incident speed of the second mass?

• A) 15 m/s
• B) 8.7 m/s
• C) 6.1 m/s
• D) 11 m/s
• E) 5.3 m/s

---

Definitions:

Personality

The characteristic set of behaviors, cognitions, and emotional patterns that evolve from biological and environmental factors.

Provocative Items

Materials or stimuli intended to evoke reactions or responses in subjects or audiences.

Narcissist

An individual with an excessive interest in or admiration of themselves, often disregarding the feelings of others.

Extravert

An individual who is outgoing and draws energy from being around other people, as opposed to solitude.