Question

A car of mass 200 kg is moving with a speed of 20 m/s, after 25 seconds the velocity increased by 10 m/s, then what is the change in momentum ? (A) 4000 kg m/s (B) 3000 kg m/s (C) 1000 kg m/s (D) 2000 kg m/s 3
plz tell fast

Answer 1

Answer:

p= mv

p= 200(20-10)

p=200(10)

p= 2000 kg m/s

option (d)

Answer 2

Answer:

Original momentum

= mv

= 200 × 20

= 4000 kgm/s.

When velocity is increased by 10m/s, then -

Momentum = mv

                  = 200 × 30

                  = 6000 kgm/s.

Change in velocity = 6000 - 4000

                             = 2000 kgm/s. (Option D)

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