Question

Calculate change in momentum of a car 1500 kg when its speed decreases from 72 km/h to 36 km/h ​

Answer 1

Answer:

1. Mass of car = 1500 kg.

2. Velocity v1 = 36 km/hr = 10 m/s.

3. Momentum p1 = 1500 x 10 = 15000 kg.m/s.

4. Velocity v2 = 72 km/hr = 20 m/s.

5. Momentum p2 = 1500 x 20 = 30000 kg.m/s.

6. Change in momentum = p2 -p1 = 30000 – 15000 = 15000 kg.m/

Answer 2

Answer:

GIVEN :-

mass(m) = 1500kg

V1 = 72km/h = 20m/s

V2 = 36km/h = 10m/s

W.K.T

FORMULA OF CHANGE IN MOMENTUM I

P2 - P1

P2 = MV1

P1 = MV2

MV1 - MV2

1500×20 - 1500×10

30000 - 15000

15000kgm/s is change in momentum

Explanation:

HOPE YOU UNDERSTAND