Question

what is the change in momentum of a ball of mass 1 kg when its speed increases from 3.6 km per hour to 7.2 kilometre per hour​

Answer 1

Explanation:

change in momentum = (7.2-3.6)*(5/18)*1 = 1 kg*m/s

Answer 2

Answer:

Mass of a ball=1kg

Initial velocity of a ball (u) = 3.6km/h

Now, we can convert km/h in m/s

so,we get :- 36×1000/3600 = 1m/s

Final velocity of a ball=7.2km/h

now,we can convert it in m/s

so,72×1000/3600=2m/s

Now according to the 2nd law of motion:-M(v-u)

1kg(2-1)m/s = 1kg.m/s