Question

What is the change in momentum of a car weighing 1500 kg when it's speed increases from 36 km/h to 72 km/h uniformly?​

Answer 1

Answer:

w=1500kg

u=36km/h

v=72km/h

u= 36x5/18=10 m/s

v=72x5/18=20m/s

change in momentum =m(v-u)

1500x(20-10)

1500x10

15000 = change in momentum

Explanation:

weight is equals to 1500 kg initial velocity is equals to 36 kilometre per hour we have to change it into metre per second so we multiply it by 5/18 and final velocity is equals to 72 km per hour we have to change it also in metre per second so we multiply again it by 5/18 then we will get are final and initial velocity in metre per second then we know that change in momentum is m(v-u) so we put the weight and initial and final velocity of the car in this equation and then we have to solve it after solving we get the answer 15000 and this is the correct answer

Answer 2

Answer:

The change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h = 30000 kg. m/s − 15000 kg.