A construction worker strikes a concrete wall with a hammer. The wall does not move, and the hammer does not break. Describe the collision of the hammer and wall by using Newton's Third Law. (Do not just write down Newton's Third Law; describe the forces in the collision including size and direction.)

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy