After landing from your skydiving experience, you are so excited that you throw your helmet upward. The helmet rises 4.5 m above your hands. What was the initial velocity of the helmet when it left your hands?

(psychology) i basically have to make a mnemonic device for a vocab term from the lesson, the word i chose was anterograde amnesia ( loss of memory from the point of injury or trauma forward, or the inability to form new long-term memories.) i'm not that creative and my brain feels dead so plzzz if you could i'd be sooo !

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

Based on your observations of porto alegre and houston, what would you conclude about the longest and shortest days for the two cities on opposite sides of the equator