Object A has a mass of m, object B has a mass of 4m, and object...
Object A has a mass of m, object B has a mass of 4m, and object C has a mass m/4. Given that they all have the same kinetic energy, find the momentum of each object in terms of m and v, where v is in the velocity of object A and m is the mass of object A. Show all steps for all calculations needed.
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Object A has a mass of m, object B has a mass of m/2, and object...
Object A has a mass of m, object B has a mass of m/2, and object C has a mass of 2m. (a) If all three objects have the same momentum, rank them in order of increasing kinetic energy. (b)For the same three masses as before, now assume that the objects have the same kinetic energy, and rank them in order of increasing momentum.
11.9. As shown in the figure, an object of charge Q, and mass m moves near a stationary object wi...
11.9. As shown in the figure, an object of charge Q, and mass m moves near a stationary object with charge Q2. Assume the mass and the charges are constants, and assume the objects are surrounded by free space. The kinetic energy of the moving object is converted to or from energy stored in the electric field between the objects. The kinetic energy of the moving object is given by m). The energy of the electric field is given by...
1. An object having mass M moves with a speed v. If the mass of the...
1. An object having mass M moves with a speed v. If the mass of the object is tripled and the speed is cut in half the magnitude of its new linear momentum is? a)Mv b)6Mv c)2Mv/3 d)Mv/2 e)3Mv/2 2. An object has in initial kinetic energy of KE. If the mass of the object is tripled and the speed is cut in half, it new kinetic energy is? a)KE b)3KE/4 c)12KE d)KE/4 e)3KE/8
Jogger A has a mass m and a speed v, jogger B has a mass m/2...
Jogger A has a mass m and a speed v, jogger B has a mass m/2 and a speed 3v, jogger C has a mass 3m and a speed v/2, and jogger D has a mass 4m and a speed v/2. Rank the joggers in order of decreasing kinetic energy. Indicate ties where appropriate.
Exam 3 (cont.) 19. 8 of 12 Consider two carts of mass m and 4m, at...
Exam 3 (cont.) 19. 8 of 12 Consider two carts of mass m and 4m, at rest on a frictionless, horizontal surface. Now suppose a horizontal force is exerted on each cart. The forces are constant, and they have the same magni- tude F, and the same direction. The force on m acts for 2 seconds and the force on 4m acts for 1 second. After the forces cease, the carts continue moving with constant velocity forever. Compare the momenta...
If the velocity of an object is doubled and its mass is halved, which of the...
If the velocity of an object is doubled and its mass is halved, which of the following statements is true about the object? Select one: a. Its momentum is halved; its kinetic energy doubles. b. Its momentum stays the same; its kinetic energy doubles. c. Its momentum is halved; its kinetic energy quadruples. d. Its momentum is halved; its kinetic energy is also halved.
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 >...
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 > kgm/s, just before it strikes object B, which has mass mg = 12 kg. Just before the collision object B has initial momentum 8,1 = < 4,7,0 > kg. m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sysj = (19,-1,0) kg.m/s The forces that A and B exert...
Problem 2 (10 pt.) A homogeneous sphere of mass m and radius b is rolling on...
Problem 2 (10 pt.) A homogeneous sphere of mass m and radius b is rolling on an inclined plane with inclination angle ? in the gravitational field g. Follow the steps below to find the velocity V of the center of mass of the sphere as a function of time if the sphere is initially at rest. Bold font represents vectors. There exists a reaction force R at the point of contact between the sphere and the plane. The equations...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
11.9. As shown in the figure, an object of charge Q, and mass m moves near a stationary object with charge Q2. Assume the mass and the charges are constants, and assume the objects are surrounded by free space. The kinetic energy of the moving object is converted to or from energy stored in the electric field between the objects. The kinetic energy of the moving object is given by m). The energy of the electric field is given by...
Exam 3 (cont.) 19. 8 of 12 Consider two carts of mass m and 4m, at rest on a frictionless, horizontal surface. Now suppose a horizontal force is exerted on each cart. The forces are constant, and they have the same magni- tude F, and the same direction. The force on m acts for 2 seconds and the force on 4m acts for 1 second. After the forces cease, the carts continue moving with constant velocity forever. Compare the momenta...
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 > kgm/s, just before it strikes object B, which has mass mg = 12 kg. Just before the collision object B has initial momentum 8,1 = < 4,7,0 > kg. m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sysj = (19,-1,0) kg.m/s The forces that A and B exert...
Problem 2 (10 pt.) A homogeneous sphere of mass m and radius b is rolling on an inclined plane with inclination angle ? in the gravitational field g. Follow the steps below to find the velocity V of the center of mass of the sphere as a function of time if the sphere is initially at rest. Bold font represents vectors. There exists a reaction force R at the point of contact between the sphere and the plane. The equations...
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