A dart of mass m is fired at and sticks into a block of mass Mthat is initially at rest on a rough, horizontal surface. Thecoefficient of kinetic friction between the block and the surfaceis μk. After the collision, the dart and the block slide a distanceD before coming to rest. If the dart were fired horizontally, whatwould its speed be immediately before impact with the block? (Useany variable or symbol stated above along with the following asnecessary: g.)
