Question

A car of 1000 kg moves with a velocity of 10m/s.On applying break it comes to rest in 5 sec.Then what are its initial momentum and final momentum ​

Answer 1

Answer:

ঝঁঝৈঝঁঝটজটজঁঢনঢঢনঁঝঁঝনঝষজসঝঝপনগঘন

Answer 2

Given :-

• Mass = 1000 kg
• Initial velocity = 10 m/s
• Time taken = 5 sec

Brakes are applied , so

• Final velocity = 0 m/s

To find :-

• Initial and final momentum

Formula used :-

• Momentum [ p ] = Mass [ m ] × Velocity [ v ]

Solution :-

So, Initial momentum =

→ Mass × initial velocity

→ 1000 kg × 10 m/s

→ 10,000 kg m/s

Final momentum =

→ Mass × final velocity

→ 1000 kg × 0 m/s

→ 0

Here,

Initial velocity = 10,000 kg m/s

Final velocity = 0

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