Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

1) Name the physical quantity which corresponds to the rate of change of momentum.


2) Why do we write:
Rate of change of momentum α  \frac{mv-mu}{t}
....I mean if we write
Change of momentum, we simply write mv-mu & we don't put "t".
Therefore my question is that why do we write "t" in "rate" of change of momentum???
Is t related to rate.....Plz explain!!!!!!! :-((((((((




This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Force is time rate of change of momentum.

Time rate means the change in momentum divided by the duration of time, that a body took to change the momentum

If a body was moving at velocity u at t = 0 sec and it has a velocity v at time = t seconds, then

change of momentum = m v - mu
duration of time elapsed = t - 0sec = t

So time rate of change of momentum =   \frac{mv- mu}{t - 0} =  \frac{mv- mu}{t}.

5 4 5
Force is the rate of change of momentum. if a body of mass m is moving with avelocity  u changes its velocity after  tsec.then change in momentum=mv-mu         rate of change of momentum=change in momentm/time . ie F=m(v-u)/t                  but(v-u)/t=a the acceleration  then F=mxa    ie F=ma
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts