A Rock Is Thrown from the Edge of the Top

question 70

Multiple Choice

A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was thrown.

• A) 72 ft/s
• B) 77 ft/s
• C) 68 ft/s
• D) 82 ft/s
• E) 87 ft/s

---

Definitions:

Increase in Demand

A situation where consumers are willing and able to purchase more of a good or service at each possible price, often depicted by a rightward shift in the demand curve.

Decrease

A reduction in size, number, value, or extent.

Equilibrium Price

The price at which the quantity of a good or service demanded by consumers equals the quantity supplied by producers, leading to market balance.

Supply Curve

An illustration that demonstrates the correlation between a good or service's price and the amount made available in a specific period.