A force of 100 N acts for 5 s on an object of mass 20 kg. By how much does the momentum change every second. What is the total change in momentum? What impulse is delivered? How much velocity does the object gain?

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Answer 1 · 2018-01-20T06:09:04

Acceleration of the object is #100/20 m/s^2# or, #5 m/s^2#

So, at the end of 5 s it's velocity #(v)# will be #(0 + at)# or, #25 m/s#

So,impulse=change in momentum = #m(v-u)# or, # 20(25-0) Kg.m/s# i.e #500 Kg.m/s#