Solve KE and PE problems, show your work and box answers with correct unit (Joules) PLEASE HELP ME WITH THIS WILL GIVE 5 STARS

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two