Please help me with these questions:

with a horizontal force given by the graph below. [4 mark] a} How much work is done in moving the block the first m\"? lo} What is the block's kinetic energy after it has moved BUD m? c} What is its velocity at the B or mark\"? 0113SE?EEID Distancml 2. A spring bumper, with a forcecompression relationship given by F = {4110 Nimhr, is compressed 3.1312} cm. [4 mark] a} What elastic potential energy is stored in the spring at this compression";I lo} The spring is compressed further to 3.00 cm. What is the change in elastic potential energy? c} A Ukg cart is placed against the compressed spring in part b on a horizontal, frictionless plane. The system is released. With what speed does the cart leave the spring? 3. A [Hf-kg hockey puck is sliding along a smooth, at section of ice at 25 mils eastward when it encounters some snow. After 2.[} seconds of sliding through the snow, it returns to smooth ice, continuing at a speed of 16 mils. [4 mark] a} What is the change in the momentum of the puck? o] What impulse does the snow exert on the puck";I 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 5. A truck of mass 3.0 x10* travelling at 25 m/s [550 E of S] collides with a second truck of mass 1.4x10*. The collision is completely inelastic. The trucks have a common velocity of 13 m/s [250 E of S] after the collision. [4 marks] a) Determine the initial velocity of the less massive truck b) What percentage of the initial kinetic energy is lost in the collision between the trucks