# A force of 10 N is acting on a body of mass 20 kg for 10 seconds . Find change in its momentum .

2

2015-06-05T20:04:23+05:30

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Change in momentum(Δp) = 1 N/sec
HOW ???
F= mass(m) x acceleration(a)
Velocity(v)= Δa/Δt

So, applying F=ma, we get a=1/2...
Now, we know Momentum(p) = mv = m. (Δa/Δt)
By putting values we will get Δp = mΔv= 20 x5 = 100 N/sec
But I want it in kg m/s
okie
2015-06-05T20:13:08+05:30

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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 = mass × acceleration.
= mass × change in velocity/time
10 = 20 × change in velocity/ 10
⇒ change in velocity = 10 × 10 / 20
= 5 m/s
Change in momentum = mass × change in velocity
= 20 × 5
= 100 kg.m/s
But plz just tell me how to answer questions
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