Question

The speed of a car weighing 1500 kg increases from 36 km/h to 72 km/h uniformly. What will be the change in momentum of the car?​

Answer 1

Explanation:

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Answer 2

Given:-

• Mass of the car = 1500kg.

• Initial Velocity of the car = 36km/h = 10m/s

• Final Velocity = 72km/h = 20m/s

To Find:-

• Change in Momentum

Formulae used:-

• mv - mu

Where,

m = Momentum

u = Initial Velocity

v = Final Velocity

CONCEPT USED

• Momentum is defined as Product of Mass and Velocity.

Now,

Initial momentum of the car(mu) = 1500 ×10 = 1500kgm/s

Final momentum of the car(mv)= 1500 × 20= 3000kgm/s

Change in momentum = mv - mu

Change in momentum = 3000 - 1500 = 15000kgm/s

Hence, The Change in Momentum is 15000kgm/s.

EXTRA INFORMATION

• Force is defined as Push or pull of any object.

• Mass is the Scalar quantity , it is same everywhere

• SI unit of mass is kg.

• Velocity is the Vector quantity.