A Ball Is Projected Upward at Time T = 0 $80.5 \mathrm{~m} / \mathrm{s}$

question 91

Multiple Choice

A ball is projected upward at time t = 0 s, from a point on a flat roof 90 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is $80.5 \mathrm{~m} / \mathrm{s}$ Consider all quantities as positive in the upward direction. The vertical velocity of the ball when it is $89 \mathrm{~m}$ above the ground is closest to

• A) -81 m/s.
• B) -64 m/s.
• C) -48 m/s.
• D) -32 m/s.
• E) -97 m/s.

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Ocean

A vast body of salt water that covers approximately 71% of the Earth's surface, divided into five major oceans.

Working Class

A socioeconomic group consisting of individuals engaged in manual labor or industrial work, often recognized for their role in the production process and the economy.

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The ability or capacity of a person or group to influence or control the actions, policies, or decisions of others, typically within a governmental or organizational context.

Industrialization

The process of transforming economies from primarily agricultural to one based on the manufacturing of goods, involving mechanization and factory production.