A Ball Is Projected Upward at Time T = 0 $58.5 \mathrm {~m} / \mathrm { s }$

question 36

Multiple Choice

A ball is projected upward at time t = 0 s, from a point on a flat roof 10 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 $58.5 \mathrm {~m} / \mathrm { s }$ Consider all quantities as positive in the upward direction. At time $t = 5.97 \mathrm {~s} ,$ the vertical velocity of the ball is closest to

• A)0 m/s.
• B)+175 m/s.
• C)+12 m/s.
• D)-175 m/s.
• E)-12 m/s.

---

Definitions:

Silver Future

A contract to buy or sell a specific amount of silver at a predetermined price at a specified time in the future, used as a financial instrument for speculation or hedging.

Spot Price

The current market price at which a particular asset, such as a commodity or currency, can be bought or sold for immediate delivery.

Profit

The profit achieved when the revenue from a business operation is greater than the expenses, costs, and taxes required for the operation.

Treasury Bond

Debt obligation of the federal government with original maturity between 10 and 30 years.