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2. A car is going towards north with a velocity 20 m/s.After some time it starts to go towards south withvelocity 20 m/s. Determine change in the velocity ofthe carAns. 40 m/s towards south

Answer»

let the initial velocity towards north be 20j

so, the final velocity towards south be -20j

then change in Velocity will be -20j-20j = -40j

-ve sign is due to the fact that, direction is reversed to south from North.. and north is assumed to be +ve here.

thanx i was ensuring this app that how it works



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