A 64 g ball is shot into the barrel of a spring-gun with a speed of 24 m/s. The sprig-gun has a mass of 280 g and is initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. Assume that friction between the ball and the barrel is negligible. Note that momentum is conserved as the ball becomes stuck in the spring-gun because the net-force on the system containing both the ball and the spring-gun is zero. What is the change in kinetic energy of the ball and spring-gun?

the answer is a 3.8cm

explanation:

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!