Ja-Anna, has a mass of 45 kg, climbed 3m up a ladder to rescue her cat from a tree. how much work against gravity did she do?

What is the law of conservation of Machanical energy?

Consider a 4-mg raindrop that falls from a cloud at a height of 2 km. When the raindrop reaches the ground, it won't kill you or even bruise you because its terminal velocity is just 10 m/s.

Rubber is unusual in that it shrinks or contracts when heated. Warming a rubber ball will - A. decrease its density. B. cause its volume to remain the same. C. increase its density. D. decrease its mass.

When in orbit, a satellite such as the space shuttle is A. simply a projectile. B. in non-accelerated motion. C. free from Earth's gravity.

An Object with a mass of 9 Kilograms is traveling with a velocity of 8 meters per second towards the East. What is the momentum of the object? Show your work.

Positively-charged particles consisting of two protons and two neutrons emitted by radioactive materials. True or False

A package of aluminum foil is 59.3 yd long, 13 in. wide, and 0.00040 in. thick. If aluminum has a density of 2.70 g/cm3, what is the mass, in grams, of the foil?

A teacher pushed a 10-kg desk across a floor for a distance of 5 m she exerted a horizontal force of 20 N how much work is done

Carbon and oxygen, both nonmetals, bond to form a compound. What is the name of the carbon compound with one carbon and two oxygens? A) carbon oxide B) carbon dioxide C) carbon dioxygen D) monocarbon dioxide

Salt water has greater density than fresh water. A boat floats in both fresh water and in salt 12) water. Where is the buoyant force greater on the boat?