Notifications
Clear all
Force and Laws of Motion
1
Posts
2
Users
0
Likes
207
Views
0
28/10/2021 7:39 pm
Topic starter
What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly?
1 Answer
0
28/10/2021 7:41 pm
Mass of car = 1500 kg
Velocity v1 = 36 km/hr = 10 m/s
Momentum p1 = 1500 x 10 = 15000 kg.m/s
Velocity v2 = 72 km/hr = 20 m/s
Momentum p2 = 1500 x 20 = 30000 kg.m/s
Change in momentum = p2 - p1
= 30000 – 15000 = 15000 kg.m/s