A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.87 m and whose unstretched length is 0.47 m. Next the mass is pulled down to where the spring has a length of 1.16 m and given an initial speed upwards of 1.2 m/s. What is the maximum length of the spring during the motion that follows

Next the mass is pulled down so the spring has a length of 0.9 m and is given an initial speed upward of 1.2 m/s. ... A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.8 m and whose unstretched length is 0.65

Explanation:

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s