A block of mass m is attached to ideal spring of constant k. When the spring is neither stretched nor compressed, block is at the equilibrium position (x = 0).
Assume the force between the mass and the spring obeys Hooke’s Law: Fs = - kx, where x is the displacement and Fs is the restoring force. The restoring force is always directed toward the equilibrium position. In this example of vibrational motion, the restoring force illustrates Newton's
A) 1st Law of Motion.
B) 2nd Law of Motion.
C) 3rd Law of Motion.
D) Law of Gravitational Attraction.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Answertechnician (a) is correct;

The independent variable in this experiment is the angle at which the light from the ray box strikes the mirror.hope this .

The answer is d, you can easily test a theory! hope i you : )