Is retarding force always negative?
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yes retarding force is always negative
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Look at Newton's Second Law:
" Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object."
A retarding force, is simply put, the force that causes the acceleration of an object to be negative.
In F = ma , where F is the resultant force, the force that is against the direction of the object's current velocity is the retarding force.
For example, for a car, its forward force is F from motor. When the brake is applied, F resulting from brake is the retarding force as it is against the car's velocity.
" Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object."
A retarding force, is simply put, the force that causes the acceleration of an object to be negative.
In F = ma , where F is the resultant force, the force that is against the direction of the object's current velocity is the retarding force.
For example, for a car, its forward force is F from motor. When the brake is applied, F resulting from brake is the retarding force as it is against the car's velocity.
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