A Brass Ball Is Shot Vertically Upward from the Surface

question 53

Multiple Choice

A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
-How long does it take the ball to reach its maximum height?

• A)2.0 s
• B)2.3 s
• C)4.0 s
• D)4.6 s
• E)8.0 s

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Definitions:

Straight-Line Method

An accounting method of depreciating fixed assets evenly over their useful lives.

Depreciation Expense

Depreciation expense is the systematic allocation of the cost of a tangible asset over its useful life, reflecting the asset's consumption, wear and tear, or obsolescence.

Salvage Value

The estimated residual value of an asset at the end of its useful life, reflecting what it can be sold for or its scrap value.

Straight-Line Method

A depreciation method where an equal amount of depreciation is charged for each year of the asset's useful life.