Question

A constant force 2N acts on a body for 5 second to change its velocity .what is the change in its momentum?

Answer 1

Answer:

p2-p1= Ft, where F is force (= 2 N)and t is time (= 5 s ) during which the force acts. Therefore, change in momentum,p2-p1=(2)(5)=10 kg m/s

Explanation:

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Answer 2

Explanation:

hence, change in momentum Jm=F.t; =2*5=10kgm/sec Momentum and Its Relation to Force Momentum is a vector symbolized by the symbol vec p and is defined as dot p =n dot v The rate of change of momentum is net force: Sigma vec F = dp/ dt . This can be shown using Newton's second law