1 On object of mass 3 kg that is moving at a velocity of 17m/s collides with a stationary object of mass 10.2 kg. What is the final velocity if they stick? (Assume no external friction.)

2 A car of mass 634 kg is driving on an icy road at a speed of 17 m/s, when it collides with a stationary truck. After the collision they stick and move at a speed of 5.5 m/s. What was the mass of the truck?

3