what is called retarding force ??
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any force opposing the motion of object is known as a retarding force
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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.
harrshikka:
how to calculate this force?
Best Answer
start by recalling that F=ma
we know the mass of the object, so we must find its acceleration:
accel = change in velocity / time
here, accel = (0m/s - 150 m/s)/0.03s
this is your acceleration (negative since the bullet slows to rest); use this value of accel with the given mass in F=ma to find the retarding force
A Bullet hits a wooden Target with 150m/s and is brought to rest in 0.03sec. If the Mass of bullet is 0.08KG, Calculate the Retarding Force
we know the mass of the object, so we must find its acceleration:
accel = change in velocity / time
here, accel = (0m/s - 150 m/s)/0.03s
this is your acceleration (negative since the bullet slows to rest); use this value of accel with the given mass in F=ma to find the retarding force
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