Check Your Understanding 1) Newton\'s second law indicates that when a net force
ID: 1791227 • Letter: C
Question
Check Your Understanding 1) Newton's second law indicates that when a net force acts on an object, it must accelerate. Does this mean when two or more forces are applied to an object simultaneously, it must accelerate. 2) All the following except 1 cause the acceleration to double. Which one is the exception. a) All forces on the object double; b) The net force acting on the object double; c) Both the net force acting on the object and the mass double; d)The net force acting on the object remains the same but the mass of the object is reduced by a factor of 2Explanation / Answer
1)No. It depends on the direction of all the forces acting on the object. Sometimes they all adds up to give a zero acceleration.
The second consition is: If two or more forces acts on an object, then there will be a net force ating on the object which depends on the magnitude and direction of the forces acting on the object. And when there is a net force acting on the object it accelerates.
Fnet = ma => a = Fnet/m
2)
(d)The net force acting on the object remains same but the mass of the object is reduced by a factor of 2.
we know that
a = Fnet/m
a = Fnet/(m/2) = 2Fnet/m