How did Physics P-22 go?

[asadalam]

Guys.... in question number 2.. for finding distance travelled by the stone in one part I messed up and used the value of velocity instead of gravity by mistake.... so my answer came 23m......thus my answer for displacement came -7.66m..... how much mark will i lose for this..?
and for finding the frequency in the stationary wave again by mistake i divided the speed by 2.0 cm instead of 2.8cm.... so my answer came 15GHz instead of 10.7GHz.... how much mark am I going to lose for this??

I feel like kicking myself.!!!

Maybe 2 for 23 one,and zero for displacement as it is error carried forward.Again maybe 1 mark off the other one if its of 2 marks

 

[Hassan Mirza Aziz]

Any prediction/guess about physics p33?