Un ladrillo cae desde la azotea de un edificio de 15 pisos si cada piso mide 2.5m de alto, determina:(tiro vertical) a) el tiempo que tarda el ladrillo en llegar al suelo
b) la velocidad del ladrillo un instante antes de tocar el suelo

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.