1.

Calculate the force required to change the velocity of an object of mass 4 kg from 2 ms-2 to 4 ms-2 in one second.

Answer»

F = ma 

m = 4 kg 

a = 2 ms-2 

F = ? 

F = 4 kg x acceleration 

F = 4 x 2 

= 8 kg ms-1 or 8 newton or 8 N.



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