If an object is at rest and then starts moving, then
its speed changed from zero to not-zero.
That means there was some acceleration.
In order to get acceleration, there has to be a net force on
the object ... the forces acting on it must be unbalanced.
The closest choice is ' B ' .
If a golf ball is at rest on the grass then an unbalanced net force must be applied to cause the ball to move, therefore the correct answer is option B
Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = m*a
where F represents the force applied
m is the mass of the object
a is the acceleration of the object
As given in the problem statement a golf ball is at rest on the grass.
According to the first law of motion given by newton unless forced to change its state by an outside force, every object will continue to be at rest or moving uniformly in a straight line. Inertia is the propensity to resist changes in a state of motion.
Thus, The correct response is option B because a golf ball at rest on grass requires the application of an unbalanced net force before it can move.
Learn more about Newton's second law, here
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