Which could cause a satellite to descend low enough that it burns up in the earths atmosphere? a. centripetal force b. air resistance c. gravitational force

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?