*Please Show How You Got Answer 001 10.0 points A 15 kg object and a 16 kg objec
ID: 2241053 • Letter: #
Question
*Please Show How You Got Answer
001 10.0 points
A 15 kg object and a 16 kg object are con- nected by a massless compressed spring and rest on a frictionless table. After the spring is released, the object with the smaller mass has a velocity of 10 m/s to the left.
What is the velocity of the object with the larger mass?
Answer in units of m/s
002 10.0 points
A 61.9 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 10.5 m/s, propelling the astronaut back to the shuttle.
Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank.
Answer in units of m/s
003 (part 1 of 3) 10.0 points
Tony (of mass 75 kg) coasts on his bicycle (of mass 5 kg) at a constant speed of 6 m/s, carrying a 12 kg pack. Tony throws his pack forward, in the direction of his motion, at 4 m/s relative to the speed of bicycle just before the throw.
What is the initial momentum of the system (Tony, the bicycle, and the pack)?
Answer in units of kg
*Please Show How You Got Answer 001 10.0 points A 15 kg object and a 16 kg object are con- nected by a massless compressed spring and rest on a frictionless table. After the spring is released, the object with the smaller mass has a velocity of 10 m/s to the left. What is the velocity of the object with the larger mass? Answer in units of m/s 002 10.0 points A 61.9 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 10.5 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank. Answer in units of m/s 003 (part 1 of 3) 10.0 points Tony (of mass 75 kg) coasts on his bicycle (of mass 5 kg) at a constant speed of 6 m/s, carrying a 12 kg pack. Tony throws his pack forward, in the direction of his motion, at 4 m/s relative to the speed of bicycle just before the throw. What is the initial momentum of the system (Tony, the bicycle, and the pack)? Answer in units of kg middot m/s 004 (part 2 of 3) 10.0 points What is the momentum of the system im- mediately after the pack is thrown? Answer in units of kg middot m/s 005 (part 3 of 3) 10.0 points What is the bicycle speed immediately after the throw? Answer in units of m/s 006 (part 1 of 2) 10.0 points A(n) 0.596 kg football is thrown with a speed of 12.5 m/s. A stationary receiver catches the ball and brings it to rest in 0.0249 s. What is the magnitude of the impulse de- livered to the ball? Answer in units of kg middot m/s 007 (part 2 of 2) 10.0 points What is the average force exerted on the re- ceiver? Answer in units of N 008 (part 1 of 2) 10.0 points A 941 kg drag race car accelerates from rest to 111 km/h in 1.16 s. What change in mo- mentum does the force produce? Answer in units of kg middot m/s 009 (part 2 of 2) 10.0 points What average force is exerted on the car? Answer in units of N 010 (part 1 of 2) 10.0 points In a particular crash test, an automobile of mass 1558 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 17 m/s and 2.9 m/s, respectively. If the collision lasts for 0.12 s, find the magnitude of the impulse due to the collision. Answer in units of kg middot m/s 011 (part 2 of 2) 10.0 points Calculate the magnitude of the average force exerted on the automobile during the collision. Answer in units of N 012 (part 1 of 3) 10.0 points Each croquet ball in a set has a mass of 0.51 kg. The green ball, traveling at 10.3 m/s, strikes the blue ball, which is at rest. Assuming that the balls slide on a friction- less surface and all collisions are head-on, find the final speed of the blue ball in each of the following situations: The green ball stops moving after it strikes the blue ball. Answer in units of m/s Page 1 image39128 Page 1 image39408 Page 1 image39688 Page 1 image39968 Page 1 image40248 Page 1 image40528 Page 1 image40808 Page 1 image41088 Page 1 image41368 013 (part 2 of 3) 10.0 points b) The green ball continues moving after the collision at 2.8 m/s in the same direction. Answer in units of m/s 014 (part 3 of 3) 10.0 points c) The green ball continues moving after the collision at 0.9 m/s in the same direction. Answer in units of m/s 015 (part 1 of 2) 10.0 points A billiard ball of mass 0.514 kg and speed 0.422 m/s makes a head-on elastic collision with an identical billiard ball at rest. What is the kinetic energy of the second ball after the collision? Answer in units of J 016 (part 2 of 2) 10.0 points What is the magnitude of its linear momentum? Answerinunitsof kgm/sExplanation / Answer
8)
m = 941 kg
v1 = 0
v2 = 111 km/h = 30.833 m/s
change in momentum = m*(v2-v1) = 29014.17 Kg.m/s
9)
imulse = change in mmomentum
Fav*t = m(v2-v1)
Fav = 29014.17/1.16 = 1091.56 N
10)
v1 = -2.9 m/s
v2 = 17 m/2
impulse = m*(v2-v1) = 31004.2 kg.m/s
11)
Fav = imulse/t = 31004.2/0.12 = 258368.33 N
12)
a) m1*u1 = m2*v2
v2 = m1*u1/m2 = 0.51*10.3/0.51 = 10.3 m/s
b)
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