A projectile is shot from the edge of a cliff 170 m above ground with an initial speed of 75.0 m/s at an angle of 24° below the horizontal. How much time does it take the projectile to hit the ground?

Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?