I'm trying to make corrections to my assignment, and these are the questions I got wrong. The number of questions is off because the test had two parts. please help with answering these questions correctly.

Do = mv my ; = MJ ; Short Answer, 3 points each A rubber ball collides head-on with a more massive steel ball traveling in the opposite direction with equal speed. Which ball receives the larger impulse, or do they both receive the same impulse? Briefly explain your reasoning. The rubber ball because the steel ball exerts mere farce Are in the lauraicy mox. Momentum Eenergy are centered but the rubber ball hos smaller mass so It will recieve larger impulse I- Fot 013 2. The left figure below shows two children of equal mass standing halfway to the edge of a turntable that is freely rotating at an angular velocity wi. They then walk to the positions shown in the right figure; one child is at the center of the turntable and the other child is at the edge. Is wy greater than, less than, or equal to wi? Briefly explain your reasoning. Wi wf = ? The moment of inertia for a solid disk around its center of mass is: MR Treat the children as point masses, which each have a moment of inertia: uncorrect X cus is larger because the inertia for the m. smaller due to the Y of one child = 0m , so the inAn gets smalley and we gets bigger so that angular momentum 18 conserved 1./3 Group Part Page 1 of 5 CS Scanned with CamScannerProblem 4. [8 points] A block of mass 0. 150 kg compresses a horizontal spring with a spring constant of 30 N/m by D. {175 m as shown' in the top diagram, below. The block is released from rest and travels across a smooth horizontal surface until it reaches the base of an incline of angle ti = 22. The block travels up the incline a distance d. The incline's surface is rough, and the coefcient of kinetic friction between the block and the surface of the incline is in, = 0.27. Show all steps of all work, including starting equations in terms of variables, not numbers, for full credit. '10 r_i' b Smod'l'lr't I {3] (a) Using energy, determine how fast the block is moving when it reaches the base of the incline. Keep three signicant gures in your answer and don't forget units. You do not need to know the distance from the spring to the base of the incline to solve this part of the problem E E ' \" (- ,nwffo i m .32 ,L i " Elm"; M50 k 1:1 _ m V\" Continued on next page I V; 1'.\\- O 6 M {3 \\. ' Page 3 of5 [5] (b) Using work and energy, determine the distance d the block travels up the incline before stopping and sliding back down. Keep three significant figures in your answer and don't forget units.2. The figure below shows a potential energy diagram for a particle of mass m that is released from rest a = 2.0 mm. Kq . 0 (a) What is the total energy of the system? Briefly explain your reasoning. Total energy of the sustem is 55 because The patentist energy ascitakes under that line at - cart exfrett how do you know the value is ST though? Energy is conserved . (b) At what location(s) is the particle moving the fastest? Briefly explain your reason- ing. Its mowing fastest at x= 4mm because the potential energy is the lowest and the everon is kinethe so that Tatalenergy = Ps - KE. And total excray is concerned. when the Da s lous. is moving fastest (c) Does this particle have turning points? If so, where are they? If not, why not? yes, at points x - 2 mm and x- Imm because He DE - TE and cannot exceed the Total If will decrease its potential encring and encing to caniers the total enagy . 2.5/ 3 Page 2 of 6 CS Scanned with CamScanner3. Blocks A, B, and C shown in the figure below all have the same volume and are all fully submerged in the same fluid. FB Same same dons, 50 g (a) Rank in order from largest to smallest the magnitude of the buoyant force Fo on each block and briefly explain your reasoning. The Fo for A = B= C . Then are all count because they all have the same tenets of the fluid and the same lume displaced. and gravity is the same for all of Hem. (b) Can you tell, from just this diagram, which of these blocks is sinking to the bottom of the fluid, floating to the top of the fluid, or is neutrally buoyant (neither rising nor sinking)? Briefly explain your reasoning. yes they are all floating in the fluid pommale the boyand farce is pushing them up and so the ret fares is equal to the moment force Also the density of these blocks are equal in -the dangles of the fluid, And they all have the same fo, so they are floating 1.5/3 Page 3 of 6 CS Scanned with CamScanner