An object is thrown vertically upwards with an initial velocity of 20m/s from the edge of a cliff that is 30m from the sea below, as shown in figure 12.2 Determine:
A. Ball’s maximum height
B. Time taken for the ball to reach its maximum height
C. The Time to hit the sea
D. The speed with which it hits the sea
(You May approximate g by 10m/s)

If y gets smaller as x gets bigger and y have an relationship?

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.

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.