Obviously, we can make rockets to go very fast, but what is a reasonable top speed? assume that a rocket is fired from rest at a space station in deep space, where gravity is negligible. assume that c = 3.00 × 108 m/s.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points