A block of mass .3 kg on a horizontal surface is attached to a horizontal spring of negligible mass. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. The block-spring system is released from rest and undergoes simple harmonic motion. The graph shows the horizontal position of the block as a function of time. How could the student estimate the total mechanical energy of the system by using the graph and the known information about the system? A.Determine the average velocity of the block from the slope of the curve between 0 s & 1 s then calculate KE using this average velocity. B.Determine the average speed of the block from the slope of the curve between .2 s & .8 s then calculate KE using this average velocity. C.Determine the average speed of the block from the slope of the curve between .4 s & .6 s then calculate KE using this average velocity. D.Determine the average speed of the block from the slope of the curve between .45 s & .55 s then calculate KE using this average velocity.

A block of mass .3 kg on a horizontal surface is attached to a horizontal spring of negligible mass. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. The block-spring system is released from rest and undergoes simple harmonic motion. The graph shows the horizontal position of the block as a function of time. How could the student estimate the total mechanical energy of the system by using the graph and the known information about the system? A.Determine the average velocity of the block from the slope of the curve between 0 s & 1 s then calculate KE using this average velocity. B.Determine the average speed of the block from the slope of the curve between .2 s & .8 s then calculate KE using this average velocity. C.Determine the average speed of the block from the slope of the curve between .4 s & .6 s then calculate KE using this average velocity. D.Determine the average speed of the block from the slope of the curve between .45 s & .55 s then calculate KE using this average velocity.