Suppose a clay model of a koala bear has a mass of 0.225 kg and slides on ice at a speed of 0.715 m/s. It runs into another clay model, which is initially motionless and has a mass of 0.340 kg. Both being soft clay, they naturally stick together. What is their final velocity (in m/s)? (Enter the magnitude.) 0.87 * m/s Additional Materials Reading [-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 5.00 g bullet has a muzzle velocity of 200 m/'s when fired by a rifle with a weight of 35.0 N. (a) Determine the recoil speed (in m/s) of the rifle. m/s (b) If a marksman with a weight of 700 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. m/s