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 (4%) Problem 18: A block of mass my = 18 kg slides along a horizontal surface (with friction, Uk = 0.21) a distance d = 2.15 m before striking a second block of mass my = 7.25 kg. The first block has an initial velocity of v = 9.25 m/s. V m, m, d Otheexpertta.com 4 50% Part (a) Assuming that block one stops after it collides with block two, what is block two's velocity after impact in m/s? ed Grade Summary 12 = Deductions 0% ed Potential 100% ed ed sin() cos() tan() 7 8 9 Submissions Attempts remaining: 999 cotan() asin() acos() E 4 5 6 (0% per attempt) ed atan() acotan() sinh( 1 2 3 detailed view cosh() tanh( cotanho 0 Degrees O Radians VO ed ed Submit Hint I give up! ed Hints: 0% deduction per hint. Hints remaining: S Feedback: 0 deduction per feedback. ed ed 50% Part (b) How far does block two travel, do in meters, before coming to rest after the collision? edtheExpertTA.com Student: telghazi2101@student.stcc.edu 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 (4%) Problem 19: In an elastic collision, bumper cars 1 and 2 are moving in the same direction when bumper car 1 rear-ends bumper car 2. The initial speed of bumper car 1 is 6.55 m/s and that of bumper car 2 is 4.88 m/s. The mass of bumper car 2 is 44 % greater than that of bumper car 1. Take the positive direction to be the direction in which the bumper cars are moving. 4 50% Part (a) What is the final velocity, in meters per second, of bumper car 1? Grade Summary m/s Deductions 0% Potential 100% sin() cos() tan() 7 8 9 HOME Submissions Attempts remaining: 999 cotan() asin( acos() E 4 5 6 (0% per attempt) acotan() sinh() 2 3 detailed view atan() cosh( tanh( cotanh() + 0 END Degrees O Radians VO Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. 4 50% Part (b) What is the final velocity, in meters per second, of bumper car 2?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 (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 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. A : m M HK d- A 33% Part (a) Calculate the speed, in meters per second, of the sand-filled balloon at the instant prior to the collision. Vballoon =| m/s Grade Summary Deductions Potential sin() COs() tan() TE ( ) 7 8 9 HOME Submissions cotan() asin( acos() E 4 5 6 Attempts remainin (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosh( tanh() cotanh( 0 END Degrees O Radians VO CLEAR Submit Hint Feedback I give up ! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. A 33% Part (b) Calculate the speed, in meters per second, of the block at the instant following the collision. A 33% Part (c) Calculate the coefficient of kinetic friction between the block and the horizontal surface upon which it slides.theExpertTA.com | Student: telghazi2101@student.stcc.edu 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 (9%) Problem 21: A ball of clay with mass m1 = 0.376 kg has an initial velocity 21 = v1 i = (3.78 m/s) i A second ball of clay with mass m2 = 0.422 kg has an initial velocity m1 U2 = V2 j = (1.44 m/s) j The two balls collide, and they stick together. y A m 2 A 33% Part (a) Using the symbols provided in the palette below, not their numeric equivalents, enter an expression, in Cartesian unit-vector notation, for the total momentum of the system. Grade Summary Ptotal = Deductions 0% Potential 100% ( ) 7 8 9 HOME Submissions m 1 4 5 6 Attempts remaining: 999 (0% per attempt) V 1 1 2 3 detailed view V 2 0 VO Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. A 33% Part (b) Find the x component, in meters per second, of the velocity after the collision A 33% Part (c) Find the y component, in meters per second, of the velocity after the collision.theExpertTA.com 1 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 (2%) Problem 22: A small space probe with a mass of 213 kg is traveling with velocity a velocity of Usp = (135.5 m/s) i + (69.9 m/s) j A sudden explosion breaks it into three pieces. The first piece, with a mass of 60.3 kg, has a velocity of 71 = (-227 m/s) i + (201.5 m/s) j The second piece, with a mass of 67.4 kg, has velocity of 72 = (77.1 m/s) i + (- 212.7 m/s) j ed ed ed DAAssuming that there are only the three pieces, then what is the speed, in meters per second, of the third piece? ed 23 = m/s ed ed ed sin() cosO) tan() 7 8 9 HOME cotan() asin( acos() E 6 ed atan() acotan() sinh() 1 2 3 cosh() tanh( ) cotanh() O END ed O Degrees O Radians VO BACKSPACE CLEAR ed ed Submit Hint Feedback I give up! ed Hints: 0% deduction per hint. Hints remaining: 4 Feedback: 0% deduction per feedback ed ed ed ted