the ExpertTA.com Student: telghazi2101@student.stcc.edu My Account Log Out Class Management | Help Week7 Begin Date: 7/16/2023 12:01:00 AM -- Due Date: 7/25/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (6%) Problem 8: A rock is dropped from a height of h1 = 3.6 m above the ground. After it bounces, it only reaches a height hy = 2.14 m above the ground. The rock has mass m = 0.1315 kg. Randomized Variables 1 = 3.6 m h2 = 2.14 m m = 0.1315 kg us eted leted leted * 33% Part (a) What is the magnitude of the impulse I, in kilogram meters per second, the rock experienced during the bounce? leted I=0.2230 X Attempts Remain leted * 33% Part (b) If the rock was in contact with the ground for 1 = 0.198 s, what was the magnitude of the constant force F acting on it, in newtons? leted F = 1.280 X Attempts Remain letedClass Management | Help Week7 Begin Date: 7/16/2023 12:01:00 AM -- Due Date: 7/25/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (2%) Problem 10: A 172.5-kg rugby player is initially running at 5.5 m/s in the positive direction, but collides head-on with a padded goalpost and experiences a backward force of 1. 75 x 104 N for 5.4 x 10-2 s. Calculate the final velocity in the horizontal direction of the rugby player, in meters per second. Vf - 326.25 Grade Summary Deductions 0% Potential 100% sin( ) cos() tan() TE ( ) 7 8 9 HOME Submissions cotan() asin() acos() E / 5 6 Attempts remaining: 997 0% per attempt) atan() acotan() sinh( 3 detailed view cosh( tanh() cotanh() END 0% 0% Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! ed ed Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. ed 1 3 S E(9%) Problem 20: University Physics students design an experiment to measure assorted coefficients of friction utilizing a set-up similar to the one pictured (not drawn to scale). A small balloon containing sand with a combined mass of $2.2 g is suspended with an ideal string of length 86.6 cm, forming a simple pendulum. The pendulum is released from an angle of 32.4 0 with the vertical, and it collides with a block of mass 331 g located where the pendulum string becomes vertical. Because the balloon weighted with sand is soft and deformable, the collision is totally inelastic. The block slides for a short distance of 27.8 mm before coming to rest. The distance is so short that the upswing of the pendulum does not exert an upward force on the block. m M Uk - d- * 33% Part (a) Calculate the speed, in meters per second, of the sand-filled balloon at the instant prior to the collision. Vballoon = 5.139 m/s X Attempts Remain * 33% Part (b) Calculate the speed, in meters per second, of the block at the instant following the collision. Ublock = 1.020 block = 1.020 m/s X Attempts Remain A 33% Part (c) Calculate the coefficient of Kinetic friction between the block and the horizontal surface upon which it slides. HK = 1 Grade Summary Deductions 0% Potential 100% sin() cos() tan() TE ( ) 7 8 9 Submissions cotan() asin() acoso E 4 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosh( tanh( cotanh() + - 0 Degrees O Radians Vo Submit Hint Feedback I give up