Question

3. A body of mass 'm' is moving with a velocity 'u'. When a force is applied on it for time t, its velocity increases
to v.write expressions for
(a)initial and Final momentum ,[b]Change in momentum (c)Rate of change of momentum. Also write si unit for each

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Answer 1

Answer:

(a)Initial momentum=mu

   Final momentum=mv

   SI unit of each of the above: kgm/s

(b)Change in momentum=mv-mu=m(v-u)

   Si unit of the above:kgm/s

(c)Rate of change of momentum=m(v-u)/t

   SI unit of the above:kgm/s^2

Answer 2

(a)Initial momentum-mu

Final momentum=mv

SI unit of each of the above: kgm/s

(b)Change in momentum=mv-mu=m(v-u)

Si unit of the above:kgm/s

(c)Rate of change of momentum=m(v-u)/t

SI unit of the above:kgm/s^2