Please help me with these 2 questions and I would appreciate it if the questions were typed. I have nothing against you if you choose to guide me through pen and pencil, but if you do, make sure that it is eligible and does not look messy so that it is easier for me to understand.

3. A 0.17-kg hockey puck is sliding along a smooth, flat section of ice at 25 ml's eastward when it encounters some snow. After 2.0 seconds of sliding through the snow, it returns to smooth ice, continuing at a speed of 16 mfs. [4 mark] a} What is the change in the momentum of the puck? b} What impulse does the snow exert on the puck? c} What average frictional force does the snow exert on the puck? 4. A 35-kg object moving to the right with a velocity of 4.0 m/s collides with a 17-kg object moving to the left at 5.0 m/s. Find the velocity of the 35-kg object after the collision if a) The 17-kg object continues to move to the left but at only 0.50 m/s [4 marks] b) The 17-kg object rebounds to the right at 0.55 m/s c) The 17-kg object sticks together with the 35-kg object