A pendulum consists of a ball of mass 3.0 kg on a string oflength 4.0 m. The ball is pulled back untilits center has risen toa height of 0.80 m. The ball is released such that it strikes a 1.0kg block at thebottom of its swing. The block comes to a rest aftertraveling 2.0 m across a surface withμk= 0.15.What is the speed ofthe ball right after the collision? Is the collision elastic?
