can you please help me with this assignment, please show all the work.

This is Physics 20 (grade 11)- Module 6 - Lesson 2 - Conservation of Mechanical Energy

Question 10 A skater stands at the top of a ramp at a skate-park. The ramp is 3 meters tall. Assume Friction Not yet answered is present in this system. Marked out of a) When the skater rolls down to the bottom of the ramp, the system will have % of 4.00 Flag the initial gravitational energy remaining. question b) If the skater is "missing" gravitational energy, where did that energy GO? The missing gravitational energy has become and c) The sum of the kinetic and potential energy is as the skater rolls down the ramp.c) The sum of the kinetic and potential energy as the skater rolls down the constant ramp. decreasing increasing unpredictable Next pageQuestion 11 A rubber-band slingshot shoots a 32.0 gram stone. The band is drawn back 0.48 m by a force of Not yet 29 N. answered Marked out of Calculate the velocity of the stone when the rubber-band launches the stone. Assume 2.00 there is a 100% efficient conversion of elastic to kinetic energy. Flag question Answer in units of meters per second, rounded to one decimal place. Answer:Question 12 An arrow (mass = 0.15 kg) is fired from a bow at an angle of 61.0 above horizontal. The arrow's Not yet answered initial height is 1.5 meters off the ground, and it reaches a maximum height of 160 meters. Marked out of If the bow was drawn back 0.60 m before the arrow was fired, calculate the k-value for the 1.00 bowstring (in units of N/m). Answer using scientific notation (3 significant digits). Flag question NOTE: This is a challenging problem. You can approach it using energy conservation OR kinematics. Answer: Question 13 Please type out the work you did to calculate the Bowstring's k-value in the previous question. If Not yet answered you did work on paper, please take pictures and upload them in the dropbox provided. Marked out of Make sure you have clearly explained each step of your calculations, including defining variables 4.00 and explaining how you moved from step to step Flag question Paragraph BQuestion 14 A stuntperson jumps off a tall building during the filming of a movie. The stuntperson lands in a Not yet answered large, elastic net suspended off the ground (see image below). Marked out of Q Start 4.00 Flag question he is the height of the building from which the stuntperson jumps. hN is the equilibrium height of the net. x is the displacement of the net from equilibrium. Explain the steps and formulas you would use to calculate the stuntperson's SPEED as a function of the distance the net has stretched. Your answer should have a SINGLE final formula that would allow you to calculate the stuntperson's speed when the net is stretched by "x" meters. Show all your formulas and explain your thinking in detail. Be sure to define all variables. Paragraph B IE FOR ein