An 8-kg mass is in free fall. What is the velocity of the mass after 9 seconds?

How does energy move through the atmosphere hydrosphere and biosphere

Nce? 2 Which of the following is a physical change? Answer food being digested, or broken down into different smaller types of molecules O gold being hammered into gold leaf O oxygen and sugar reacting to form carbon dioxide and water Answer a log

How does the human eye see objects? A. Light reflects off objects, enters the eyes, and is detected by the optic nerve in the retina. B. Light absorbed by objects, enters the eyes, and is refracted by the optic nerve in the retina. C.

A comet is traveling through space with a speed of 3.40 ✕ 104 m/s when it collides with an asteroid that was at rest. The comet and the asteroid stick together during the collision process. The mass of the comet is 1.

What are two things that increased power output

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.