Question

Speed of a car weighing 1500 kg increases from 36 km/h to 72 km/h uniformly. What will be the change in the momentum of the car​

Answer 1

Answer:

15000 kg m/s

Explanation:

GIVEN,

        MASS, m                    = 1500 kg

        INITIAL VELOCITY,u  = 36 km/h = 36*5/18 = 10 m/s

        FINAL VELOCITY ,v   = 72 km/h =  72*5/18=  20 m/s

         FORMULA :  

                 CHANGE IN MOMENTUM,p = mv - mu

                               1500*20 - 1500*10

                                30000 - 15000

                                  = 15000 kg m/s

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