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

Ahot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. when the balloon is 7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below. how much time elapses before the sandbag hits the ground?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical