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4) using metre rule with mm divisions , using light gates, using balance which measures to nearest gram .. will increase the accuracy of reading... hence less uncertaintycan u also help me with JUN 11 P12 Qs ( 4 , 6 , 10 , 13( why isnt it A) , 14 (why not C))
5) horizontal distance = vt
vertical = 1/2gt^2 (using 2nd eq of motion)
horizontal/vertical= 2v/gt
10) acceleration and force will be in same direction
newtons second law states that" .... resultant force produces an acceleration in the direction of force..."