A bike rider is at rest at the top of a hill and he has 400 J of gravitational potential energy. He then coasts down the hill. What happens to the bike rider's TOTAL amount of energy throughout the time? (Ignore friction and air resistance.)

You think all professors are uncoordinated, but then you see your social psychology professor make a diving catch down the left-field line at an intramural softball game against the arts department team. you also notice that your professor hits lead-off for the team and is able to score from second base on a ground-out. you maintain your original stereotype of professors as uncoordinated by deciding that this one individual is an exception to the rule because he is a “young professor.” this is an example of

Who gave the famous "i have a dream" speech at the march on washington?

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?