CBSE Class 9 Answered
in my wuestion befor how ist coming as 4 n isnt it f=ma giving -4*1= -4n
Asked by | 28 Jul, 2012, 02:50: PM
Expert Answer
you asked for force of friction.
The name itself suggest an opposing force so it really doesnt matter if we dont put any negative mark in the answer.
but that negative mark is to be put in the calculations
Answered by | 28 Jul, 2012, 03:19: PM
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