Consider the well-known problem of a cart of mass m moving along the x axis attached to a spring (force constant k), whose other end is held xed. if we ignore the mass of the spring, then we know that the cart executes simple harmonic motion with angular frequency ! = p k=m. 1. assuming, that the spring has mass m, that it is uniform and stretches uniformly, show that its kinetic energy is 1 6mx_ 2. (as usual x is extension of the spring from its equilibrium length.) 2. write down the lagrangian for the system of cart plus spring. write down the lagrange equation of motion. find the frequency of the small oscillations.

Alkaline earth metals are found in group 2 of the periodic table.

A) acceleration. this seems to be the one that makes sense.

You would need to take a picture so i can see

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