A man with mass 82 kg runs at a speed of 2.8 ms How much kinetic energy does he have? A. 114.8 B. 221.8 C. 321.4 D. 642.9

If a ball with an original velocity of zero is dropped from a tall structure and takes 7 seconds to hit the ground what volicity does the ball have when it reaches the ground

History of spherical mirrors in human civilization?

Phenolphthalein turns pink in salt water

What is the g force for a car crash

What is the strength of an electric field that will balance the weight of a 8.2 g plastic sphere that has been charged to - 3.3 nC? Answer in N/C.

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions

What are the "base units" in the S. I. system?

What action happens if the moon spins on its axis like a top