28. someone throws a rubber ball vertically upward from the roof of a building 8.00 m in height. the ball rises,
then falls. it just misses the edge of the roof, and strikes the ground. if the ball is in the air for 3.00 s, what
was its initial velocity? (disregard air resistance.)

The mini-refrigerator fire was most likely caused by what type of wiring?

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.