second monthly test

around what date will be the next monthly test? and can someone please tell me the chapters it will include for chem, phys and bio.

all the chapters we have covered will be included

Q: The percentage error in finding the mass nd velocity of body is 5% nd 3% respectively. The percentage error in finding the K.E of that body 

Kindly solve it

As we know the formula for kinetic energy  is : K.E =1/2 mv2 ,  so the  % error of mass is 5% and velocity  is 3% then put these % in K.E formula 

    K.E = 1/2 mv2

       = 1/2  ( 5%) × (3% × 2 )

     One thing that %  error always adds with each other 

   So, K.E = 1/2  5% + 6% 

          1/2   is a no.  and also a constant  so remove it

     then  K.E =  11% . This is the   total percentage  error of kinetic energy . Hope you got it.

Thanks alot Fiza Asif Ali