A 620-G Object Traveling at 2

question 28

Multiple Choice

A 620-g object traveling at 2.1 m/s collides head-on with a 320-g object traveling in the opposite direction at 3.8 m/s.If the collision is perfectly elastic,what is the change in the kinetic energy of the 620-g object?

• A) It loses 0.23 J.
• B) It gains 0.69 J.
• C) It loses 0.47 J.
• D) It loses 1.4 J.
• E) It doesn't lose any kinetic energy because the collision is elastic.

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Definitions:

Inflation

The rate at which the general level of prices for goods and services is rising, eroding purchasing power.

Time Value

The difference between the current value of the option and the value of the option if it were immediately exercised.

Present Value

Present value signifies the current value of a future amount of money or a sequence of cash flows, discounted at a given rate of return.

Expected Future Value

An estimation of the value of an asset or amount of money at a specific date in the future, accounting for factors like interest rates and market growth.