1. [42.85 Points] DETAILS OSCOLPHYSZD16ACC 8.1.P.004. (a) What is the momentum in kg - m/s of a garbage truck that is 1.30 x 104 kg and is moving at 27.0 m/s? {Enter a number.) Em - m (b) At what speed In mfs would an 8.00 kg trash can have the same momentum as the truck? (Enter a number.) m/s Submit Answer 2. [42.85 Points] DETAILS OSCOLPHYSZD16ACC S.2.P.D18. A 0.700 kg hammer is moving horizontally at 6.50 mfs when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact in seconds. (Enter a number.) |:|s (b) What was the average force in newtons exerted downward on the nail? (Enter a number.) :N Submit Answer 3. [-/2.85 Points] DETAILS OSCOLPHYS2016ACC 8.3.P.023. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 170,000 kg and a velocity of 0.300 m/s, and the second having a mass of 95,000 kg and a velocity of -0.120 m/s. (The minus indicates direction of motion.) What is their final velocity (in m/s)? (Enter a number.) m/s + Submit Answer 4. [-/2.85 Points] DETAILS OSCOLPHYS2016ACC 8.5.P.032. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER During an ice show a 45.0 kg skater leaps into the air and is caught by an initially stationary 75.0 kg skater. (a) What is their final velocity in meters per second assuming negligible friction and that the 45.0 kg skater's original horizontal velocity was 4.00 m/s? (Enter a number.) m/s (b) How much kinetic energy is lost in joules? (Enter a number.) + Submit Answer5. [12.85 Points] DETAILS OSCOLPHYSZM SACC B.1.WA.002. MY NOTES | Two carts mounted on an air track are mowng toward one another: Cart 1 has a speed of 1.1 mfs and a mass of 0.40 kg. Cart 2 has a mass of 0.65 kg. (a) If the total momentum of the system is to be zero, what is the initia' speed (in mfs) of Cart 2? (Enter a number.) E m (b) Does It follow that the kinetic energy of the system is aiso zero since the momentum of the system is zero? 0 Yes ONO (C) Determine the system's kinetic energy (in J) in order to substantiate your answer to part (b). (Enter a number.) :1 2. [1 .43I2.85 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYSZMEACC 8.2.P.018. A 0.?00 kg hammer is moving horizontaHy at 6.50 m/s when it strxkes a nail and comes to rest after drlvmg it 1.00 cm into a board. (a) Calculate the duration of the impact m seconds. (Enter a number.) 0.003 x s (b) What was the average force in newtons exerted downward on the nail? (Enter a number.) 14?8_T5 f' N 2. [1 .43I2.85 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYSZMEACC 8.2.P.018. A 0.?00 kg hammer is moving horizontaHy at 6.50 m/s when it strxkes a nail and comes to rest after drlvmg it 1.00 cm into a board. (a) Calculate the duration of the impact m seconds. (Enter a number.) 0.003 x s (b) What was the average force in newtons exerted downward on the nail? (Enter a number.) 14?8_T5 f' N (a ) Duration of impact: t = velocity = (6.5) 0-003 sec acceler . 2119.5 b F = ma = 0- 7X 2112.5 = 1478.751 N 100% correct Put either of these + = 0.00307 69 which ever the quesho you can put any 3. 077 X 10-3 OT 0. 0 03077 of these 2 ( Both are same)