A 0.00852-kg bullet is fired straight up at a falling wooden block that has a mass of 1.22 kg. The bullet has a speed of 531 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision with the bullet occurs. As a result of the collision, the block (with the bullet in it) reverses direction, rises, and comes to a momentary halt at the top of the building. Find the time t. Number i Units
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- A collision occurs between a 1.04 kg particle traveling with velocity V 1 = (– 2.52 m/s )i + ( – 4.48 m/s )j and a 4.27 kg particle traveling with velocity V 2 = (6.10 m/s )i + ( – 1.94 m/s )j. The collision connects the two particles. What then is the (a)x component and (b)y component of their velocity? Express their velocity as a (c) magnitude and (d) angle (in the range (-180°, 180°]) from the +x axis? (a) Number i Units (b) Number Units (c) Number i Units (d) Number i Units > > >- Your answer is partially correct. A 0.0101-kg bullet is fired straight up at a falling wooden block that has a mass of 1.86 kg. The bullet has a speed of 812 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision with the bullet occurs. As a result of the collision, the block (with the bullet in it) reverses direction, rises, and comes to a momentary halt at the top of the building. Find the time t. Number i 0.447 Units SCollision: Two motion carts are headed for an inelastic collision! One cart has a mass of 3.23 kg and is moving to the right at a speed of 2.97 m/s. The other cart has a mass of 12.39 kg and is moving to the left at a speed of 0.03 m/s. The two carts collide and stick together. (a) What is the final velocity (speed and direction) of the gliders? (b) What percent of the initial kinetic energy was converted to other forms – i.e., "lost" – in this collision?
- A 17 kg body is moving through space in the positive direction of an x axis with a speed of 140 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 9.5 kg, moves away from the point of explosion with a speed of 77 m/s in the positive y direction. A second part, with a mass of 2.5 kg, moves in the negative x direction with a speed of 460 m/s. What are the (a) x- component and (b) y-component of the velocity of the third part? (c) How much energy is released in the explosion? Ignore effects due to the gravitational force. (a) Number i 353 (b) Number -73.15 (c) Number i 5.5331 Units Units Units m/s m/s JA 10.0-g marble slides to the left with a velocity of magnitude 0.400 m/s on the frictionless, horizontal surface of an icy New York sidewalk and has a head-on, elastic collision with a larger 30.0-g marble sliding to the right with a velocity of magnitude 0.200 m/s. Find the velocity of each marble (magnitude and direction) after the collision. (Since the collision is head-on, all the motion is along a line.) (b) Calculate the change in momentum (that is, the momentum after the collision minus the momentum before the collision) for each marble.The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0250 kg and is moving along the x axis with a velocity of +4.74 m/s. It makes a collision with puck B, which has a mass of 0,0500 kg and is initially at rest. The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find the speed of (a) puck A and (b) puck B.
- A 0.0101-kg bullet is fired straight up at a falling wooden block that has a mass of 4.08 kg. The bullet has a speed of 575 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the colllision with the bullet occurs. As a result of the collision, the block (with the bullet in it) reverses direction, rises, and comes to momentary halt at the top of the building. Find the time t.Two ice skaters, Daniel (mass 65.0 kg) and Rebecca (mass 45.0 kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 14.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00 m/s at an angle of 55.1° from her initial direction. Both skaters move on the frictionless, horizontal Part A What is the magnitude of Daniel's velocity after the collision? surface of the rink. Express your answer meters per second. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Collision in a horizontal plane. ? m/s Submit Request Answer Part B What is the direction e Daniel's velocity after the collision? Express your answer in degrees. ° from the Rebecca's original direction Submit Request Answer Part C What is the change in total kinetic energy of the two skaters as a result of the collision? Express your answer in joules. MacBook Air esc 888 F1 DII DD F2 F3 F4…A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 20.2 m/s and a 1500 kgpickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the collision, the wreckage (car and truck) moves off in a direction of 43.0° above the x-axis. Determine the initial speed of the truck and the final speed of the wreckage in meters per second. initial speed of the truck m/sfinal speed of the wreckage m/s