An 80-Kg Block Is Released from Rest,with V₁ = 0

question 8

Multiple Choice

An 8.0-kg block is released from rest,with v₁ = 0.00 m/s,on a rough incline,as shown in the figure.The block moves a distance of 1.6-m down the incline,in a time interval of 0.80 s,and acquires a velocity of v₂ = 4.0 m/s.How much work does gravity do on the block during this process?

• A)+81 J
• B)+100 J
• C)+120 J
• D)-81 J
• E)-100 J

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Definitions:

Depreciation

The process by which physical assets lose value over time due to use, wear and tear, or obsolescence.

GDP

Gross Domestic Product quantifies the complete market or monetary valuation of all end products and services fabricated within a nation's perimeter during a distinct interval.

GDP Deflator

A gauge for the price rates of all fresh, domestically created, final goods and services in a nation's economy, applied in converting nominal GDP to real GDP.

Real GDP

The total value of all goods and services produced by a country over a specific time period, adjusted for changes in price or inflation.