Adrowsy cat spots a flowerpot that sails first up and then down past an open window. the pot was in view for a total of 0.51 s, and the top-to-bottom height of the window is 2.25 m. how high above the window top did the flowerpot go?

The pot spends T = 0.185s going up and 0.185s going down past the window. 
The average speed passing by the window is 2.20 m/0.185s = 11.89 m/s. 
During passage, the pot increases speed by T*g = 0.185*9.81 = 1.815 m/s 
The speed is therefore 12.80 m/s at the bottom of the window and 10.98 m/s at the top of the window. 

The 10.98 m/s speed at the top of the window allows it to rise another 10.98^2/(2g)= 6.15 m past the top of the window

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this