A bullet with a mass is fired horizontally into a block of mass which is initially at rest on a horizontal surface. The bullet passes through the block, emerging from the other wise with a speed of . There is a coefficient of kinetic friction of between the block and the surface. The block is observed to come to rest after traveling a distance along the surface. What was the initial speed of the bullet

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?