A 70 kg high jumper leaves the ground with a speed of 6 m/s. How
high can he leap?

What happens to light waves from a star as the star moves away from earth?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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?