Please help in answering these questions with step by step solution. Thank you

Instructions Complete all the calculations and input your answers on eCentennial in quiz format. DO NOT input complete sentences - ONLY input the final numerical answer. EG -> 42 N = 42 All answers with decimal places need to be input to 3 decimal places. EG -> 1041.66666 m, should be input as 1041.666 DO NOT round your answers! ! Use the provided formulas and formulas on this assignment page for your calculation. Check Your Answers before you input them! IL You need to get a 356kg 'crated engine' into the back of your truck, and don't have a lift/crane/hoist/dolly. You and your friends can't lift it straight up, so you build a ramp to push it up into the back of your truck, and the 3 of you put in a minimum amount of effort each. Which of the ramps below would be best to build, or easiest to use? (VR) 1. Ramp 1 2. Ramp 2 3. Ramp 3 AB = 1.3m AB = 1.3m AB = 1.3m AC = 520cm AC =2600mm AC = 9.40m VR = VR = VR = eesi grandy 4. The ramp that is the easiest to use is Ramp # 5. Using the data of the best ramp from the previous scenario, you and your 3 friends will now each exert a force of 240N in order to push the engine up the ramp. Determine MA (FR).6. Using the VR from #3, and the FR which you calculated, determine how efficient you 14. For and your friends were. 7. Why is the efficiency NOT 100%, what causes this loss in efficiency? 8. What is the VR of a ramp 4m high and 22 m long? 9. What is the VR of a ramp with a height of 12m, and an incline of only 2m? 10. A ramp 10 m long is used to slide a 700kg engine onto a truck bed, which is 1 m above the floor. Find the MA (FR), VR and n (efficiency) when a force of 2225N is applied to the load. 11. Find the mass of a vehicle being lifted if the hydraulic jack has an efficiency of 85%, and a VR of 97:1, and the jack handle has a force of 190N. F P = Pressure F = Force P A A = Area 12. A 700 kg vehicle places its force on a round bottle jack. The base diameter of the jack is 40 mm. Find the following: a) Force on the floor in Newtons FORCE b) Pressure on the floor in N/mm P = MR 13. The average pressure on a dam 45 m long is 40 kN/m2 when the water is 8 m high (deep). Find the total force on the side of the dam, assuming it to be vertical where it is in contact with the water. Provide your answer in kN. FORCE PRESSME -.14. Forces are acting on a 4.5 kg block as shown. 4.3N 3.7N 4.5 kg 8N a) What is the net force acting on the block? b) What is the magnitude of the block's acceleration? 15. A train is accelerating at a rate of 28 km/h. if its initial velocity is 5 km/h, what is its final velocity after 30 seconds? 16. The length of a lever is 9.25m. Length of the load arm is 5.5m. The fulcrum is at one end of the lever. a) What class lever is this? b)What is the distance from the fulcrum to the load? c) What is the distance from the fulcrum to the effort? d) What is the mechanical advantage of the lever