1.

An object of mass 100kg is accelerated uniformly from a velocity of 4m/s to 8m/s in 2s.calculate the initial and final momentum of the objecta)800kgm/s, 400kgm/sb)400kgm/s, 800kgm/sc)200kgm/s, 400kgm/sd)400kgm/s, 200kgm/s​

Answer»

Answer:

CORRECT OPTION is (B)400 kg m/s, 800 kg m/s

Explanation:

We know that,

\boxed{Momentum = Mass*Velocity}

\boxed{p = mv}

In the given case,

Mass = m = 100kg

Initial velocity = u = 4 m/s

FINAL velocity = v = 8 m/s

Initial momentum = Mass * Initial velocity

p = mu

p = 100 * 4

p = 400 kg m/s

Final momentum = Mass * Final velocity

p = mv

p = 100 * 8

p = 800 kg m/s


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