a rifle of mass 6.2 kilograms recoils at a speed of 221 m/s after firing a 150 gram bullet. with what speed does the bullet fire with

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.