Allison stands 180 meters away from a steep canyon wall. She shouts and hears the echo of her voice one second later. What is the speed of the wave?

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life