Question

A car of mass 200kg is moving with a speed of 20 m/s after 25 seconds the velocity decreased by 10 m/s, then what is the change in momentum?

Answer 1

QUESTION:-

A car of mass 200kg is moving with a speed of 20 m/s after 25 seconds the velocity decreased by 10 m/s, then what is the change in momentum?

EXPLANATION:-

• Mass(m)=200 kg
• Initial velocity(u)=20 m/s
• Final velocity(v)=20-10=10 m/s
• Change in momentum(Δp)= ?

We know that:-

$\boxed{\bigstar\bf\;\Delta p=mv-mu\;\bigstar}$

Δ=200×10-200×20

ΔChange in momentum=2000-4000

ΔChange in momentum=-2000 kg/ms

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