Question

ALLEN
PRE-NURTURE & CAREER FOUNDATION DIVISION
ARCTITUTE
PHYSICS
An object of mass 200 kg is accelerated uniformly from a velocity of 10 m/s to 20 m/s in two seconds, Calculate

(a) Initial momentum of the object
(b) Final momentum of the object
(c) Magnitude of the force exerted on the object
(d) Name two factors on which change of momentum depends​

Answer 1

Answer:

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Explanation:

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Answer 2

Given mass  m = 200 kg  time= 2 seconds

       Initial velocity u = 10 m/s   Final velocity v =20m/s

   Momentum = mass x velocity

a)  Initial momentum = mass x initial velocity = m x u = 200 × 10

                                                                                    = 2000 Kgm/s

b)Final momentum = mass x final velocity  = m x v  = 200 × 20

                                                                                   = 4000 Kg m/s

c) Force = change in momentum / time taken

             =(4000-2000)/2 = 1000 N

d ) two factors on which change of momentum depends are mass and velocity

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