PREVIOUS ANSWERS SERCP11 6.1.P.001. Calculate the magnitude of the linear momentum for the following cases. 1. [0.511 Points] (a) a proton With mass 167 X 1EI'27 kg. moving With a speed of 4.90 x we m/s x Your response differs signicantly from the correct answer. Rework your solution from the beginning and check each step carefully. kg - m/s (b) a 18.Dg bullet moving With a speed of 290 m/s J kg-m/s (c) a 71.5kg sprinter running With a speed of 11.0 m/s 785.5 J kg - m/s (d) the Earth (mass = 5.99 x 1024 kg) moving With an orbital speed equal to 2.98 x 104 m/s. x Your response differs signicantly from the correct answer. Rework your solution from the beginning and check each step carefully. kg - m/s Need Help? 2. [011 Points] PREVIOUS ANSWERS SERCF'I'I 6.1.F.004. A U.27U*kg volleyball approaches a player horizontally With a speed of 15.5 m/s. The player strikes the ball With her st and causes the ball to move in the opposite direction with a speed of 22.2 m/s. (a) What impulse is delivered to the ball by the player? (Take the direction of nal velocity to be the positive direction. Indicate the direction with the sign of your answer) x Your response differs from the correct answer by more than 10%. Double check your calculations. kg - m/s (b) If the player's st is in contact With the ball for 00600 sJ nd the magnitude of the average force exerted on the player's st. x Your response differs from the correct answer by more than 10%. Double check your calculations. N Need Help? \f9. [-/1 Points] DETAILS SERCP11 6.4.P.036. MY NOTES ASK YOUR TEACHER A railroad car of mass / moving at a speed v, collides and couples with two coupled railroad cars, each of the same mass / and moving in the same direction at a speed v2. (a) What is the speed v of the three coupled cars after the collision in terms of v, and v 2? (b) How much kinetic energy is lost in the collision? Answer in terms of M, V 1, and V2. KE, - KE = Need Help? Read It Submit Answer 10. [-/1 Points] DETAILS SERCP11 6.4.P.042.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A bullet of mass m = 8.00 g is fired into a block of mass M = 230 g that is initially at rest at the edge of a table of height / = 1.00 m (see figure below). The bullet remains in the block, and after the impact the block lands d = 1.90 m from the bottom of the table. Determine the initial speed of the bullet. m/S m11. [-/1 Points] DETAILS SERCP11 6.5.P.054. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The Merlin rocket engines developed by Spacex can produce 7.79 x 10 N of instantaneous thrust with an exhaust speed of 3.05 x 10 m/s in vacuum. What mass of fuel does the engine burn each second to produce this thrust? (Enter your answer in kg/s. ) HINT kg/s Need Help? Read It Watch It 12. [-/1 Points] DETAILS SERCP11 6.5.P.059. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A spaceship's orbital maneuver requires a speed increase of 1. 10 x 10' m/s. If its engine has an exhaust speed of 2.80 x 10 m/s, determine the required ratio- io "i of its initial mass to its final mass. (The difference M, - My equals the mass of the ejected fuel.) HINT Need Help? Read It Watch It13. [-/1 Points] DETAILS SERCP11 6.A.P.062. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider a frictionless track as shown in the figure below. A block of mass m, = 4.60 kg is released from @. It makes a head-on elastic collision at with a block of mass my = 18.0 kg that is initially at rest. Calculate the maximum height to which my rises after the collision. m A 5.00 m mg B Need Help? Read It 14. [-/1 Points] DETAILS SERCP11 6.A.P.063.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 2.0-g particle moving at 8.4 m/s makes a perfectly elastic head-on collision with a resting 1.0-g object. (a) Find the speed of each particle after the collision. 2.0 g particle m/s 1.0 g particle m/s (b) Find the speed of each particle after the collision if the stationary particle has a mass of 10 g. 2.0 g particle m/s 10.0 g particle m/s (c) Find the final kinetic energy of the incident 2.0-g particle in the situations described in parts (a) and (b). KE in part (a) KE in part (b) In which case does the incident particle lose more kinetic energy? O case (a) O case (b)