What is the sequence of energy transformations associated with a hydroelectric dam? electrical energy into mechanical energy into kinetic energy into gravitational potential energy
gravitational potential energy into kinetic energy into mechanical energy into electrical energy
chemical energy into kinetic energy into mechanical energy into electrical energy
chemical energy into thermal energy into kinetic energy into electrical energy

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

The dot diagram represents the motion of the motorcycle as it moves from left to right

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