31.- A mass of 3Kg with initial velocity5 m/s collides with another particle of mass 2Kg with velocity-3m/s. After the collision the two particles move together. Find the final velocity of the compound mass.
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- Chapter 07, Problem 30 GO One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity. Momentum is conserved. The speed of the object that is moving initially is 24 m/s. The masses of the two objects are 3.2 and 7.9 kg. Determine the final speed of the two-object system after the collision for the case (a) when the large-mass object is the one moving initially and the case (b) when the small-mass object is the one moving initially. (a) Vf = (b) Vf =1. A projectile of mass m = target of mass M = projectile-target combination has a speed V of 0.2kg and initial speed v; = 200 ms-1 hits a stationary 2kg and gets imbedded in it. Immediately after the collision the (a) V = 18.2 ms-1 (b) V = 20.0 ms-1 (c) V = 60.3 ms-1 (d) V = 63.2 ms-13. A ball of mass 25 g traveling east at 12 m/s bounces elastically into a 2nd ball of mass 50 that is traveling west at 4m/s. What are the final velocities and momentum of each ball? (Hint: either solve the systems of equations for momentum and energy simultaneously or come up with a relative velocity system..) Place ball 2 in a moving reference frame so that it's velocity is 0 in this reference frame. In this reference frame ball 1 has 16 m/s initial velocity. Find the final velocities in this moving reference frame. m2 V10 m1 + m2 2m1 m1 v'1F v'2F V10 m1 + m2 Don't forget to come back out of the moving reference frame at the end... (since we added velocities before this time we subtract...
- 37. A 0.15 kg arrow with a velocity of 18 m/s to the east strikes and pierces an 8-kg target at rest. What is the final velocity of the combined mass? Group of answer choices No answer 0.23 m/s 0.43 m/s 0.13 m/s 0.33 m/s8. A hockey puck of mass 0.37 kg is shot east at 2.10 m/s strikes a second puck, initially at rest, of mass 0.54 kg. As a result of the collision, the first puck is deflected at an angle of 35° north of east, with a speed of 1.45 m/s. What is the angle made between the direction of the second puck and the east direction after the collision? X 317.86 O4. Two lumps of clay moving in opposite directions collide with each other and move off as one with no external forces exerted on the system. The first lump has a mass of 0.40 kg and a velocity of +2.0 m/s and the other a mass of 1.6 kg and a velocity of-1.0 m/s. What is the hlocity of the center of mass before the collision? A. -0.40 m/s B. +0.40 m/s C.-1.2 m/s D. 1.2 m/s
- 47. A 2.5-kg ball travelling at 2.3 m/s to the right collides head-on elastically with a stationary ball of mass 2.0 kg. Find the velocity of each ball after the collision. (Hint: Determine the number of equations you need by counting the unknowns.)A train of mass m1 = 1400 kg is moving at a velocity of 14 m/s collides with a second train of mass m2 = 2100 kg at rest, after the collision they stick together, what is the final velocity of the train?3.A billiard ball of mass 0.500 kg moves at a velocity of 2.20m/s [fwd] when it collides elastically with asecond ball, of mass 0.350 kg. The second ball is initially moving at 1.50m/s [fwd]. Determine theobtained velocity of both balls after the collision.
- A 5.25-g bullet is fired into a 360-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 8.75 cm. What was the magnitude of the momentum of the combined mass immediately after the collision?1. A car of 800 kg is moving 45'north of east at 30 m/s. Another car of mass 600 is heading 45 north of west 40 m/s. They collide at the intersection. After collision, 800 kg move 60'north of west at 20 m/s. Find the magnitude and direction of 600 kg mass after the collision. The collision is inelastic.For a system of three particles moving along a line, an observer in a laboratory measures the following masses and velocities. What is the velocity of the CM of the system? Enter a positive value if the velocity of the CM of the system is in the +x direction and enter a negative value if the velocity of the CM of the system is in the -x direction. Mass (kg) Vx (m/s) 4.00 230 5.0 -120 2.0 +52 m/s