Questions to consider:
1. if the skater has a mass of 60 kg, what is her gravitational potential energy at the top of the 4 m high
half-pipe?

The softest and hardest minerals are: softest hardest

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec

What effects result when there is an impact between earth and an asteroid? check all that apply. a. massive flooding. b. extinction of many life forms. c.major earthquakes change in average global temperature. d. giant dust cloud