Question

the speed of a car weighing 1500 kg increase 36km/h to 72km/h uniformly . what will be the change in momentum of the car?​

Answer 1

Given:-

• Mass of car ,m = 1500kg

• Initial velocity ,u = 36km/h

• Final velocity , v = 72km/h

To Find :-

• Change in momentum

Solution:-

Firstly we convert the unit of speed

Initial velocity = 36×5/18 = 10m/s

Final velocity = 72×5/18 = 20m/s

Now ,

→ Change in momentum = Final momentum- initial momentum

→ ∆p = mv -mu

Substitute the value we get

→ ∆p = m (v-u)

→ ∆p = 1500× (20-10)

→ ∆p = 1500 ×10

→ ∆p = 15000kgm/s

∴ The rate of change of momentum is 15000 kgm/s.

Answer 2

Answer:

15000 KG m/ S

Explanation: