investigation

hello youssef!!
in this investigation, first you have to write down your predictions in PCM 15, then you have to cut out the spinners of different wing-lengths (from PCM 14) and use a stopwatch to find out how long it takes the different spinners to spin to the ground, and record your findings in PCM 15. Also, you will need to draw the correct kind of graph on the back of PCM 15.

hope this answers your question.
take care!

dear mrs karam

i am omar hany,how are u doing??

what is the PCM 15

Hello Omar!!

PCM15 is a sheet that you recieved in your envelope. didnt you get it?!

dear mrs karam

yes, i found it



thnx regards

omar hany

hey omar,

great that you found the sheet! (i was worried!)
hope you enjoy the little investigation with the spinners!
see you soon!!

hi ms karamiam ali mohamed

hi ali,
welcome to the forum!