Calculate the uncertinty in the velocity fo a wagon of mass ` 200 kg` whose position is known to an accuracy of ` +- 10 m`.

Explanation

` Deltau. Delta x = h/ ( 4 pi m) ("Given " Delta x = 10 m, m = 2000 kg )`
` :. Delta u xx 10 = ( 6.626 xx 10^(-34))/( 4 xx 3.14 xx 2000)`
` Delta u = 2. 64 xx 10^(- 39) ms^(-1)`.