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An object of mass 5 kilograms is moving across a surface in a straight line with a speed of 3.5 meters/second. What amount of force would be required to keep the object in motion if you ignore the surface friction?

Respuesta :

F = MA 
A = change in velocity 
Constant velocity = no change in velocity = Zero acceleration 
Ignoring friction, 5 kg * 0 m/s^2 = 0 N 

Therefore, there is no force (0 N) required to keep the object in motion if the surface friction is ignored.

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Correct Answer:

0 Newtons