Part I. Conservation of Linear Momentum 1. The velocity vectors pointing left are negative. What does the negative sign represent? 2. What do you notice about the total momentum before and the total momentum after?
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- I did my lab for Momentum in Conservation in Momentum and I want to know What was the difference in momentum? Was momentum conserved? according to the pictures I posted below of the results.1) Given two identical marbles, each of mass m, traveling together with a speed of v, what is the total linear momentum of this two-marble system? What is the total kinetic energy? (only need help with second question, this is just here for context) 2) If the two marbles from the previous question strike three stationary marbles (as in your previous tests), what is the total linear momentum of the marble(s) that are in motion after the collision? What is the total kinetic energy? (I ONLY NEED HELP WITH THIS SECOND QUESTION, I just put the first one for context.)To calculate the momentum of an object, which properties of an object do you need to know?
- Two objects have a perfectly elastic collision, as exactly illustrated in the diagram below. The first object (red ball) comes in at some initial speed and strikes the second one (blue ball), which was initially stationary in our reference frame. What is the speed of the blue ball after the collision? Write your answer as a fraction of v1. In other words, if you get v2 = 0.20v1, just enter 0.20. All we know is the proportionality of the masses and the relative speed of the first ball before and after the collision.What do you notice about the total momentum before and the total momentum after? Which principle are you demonstrating here? State it.If 2 marbles (of same mass and speed) travel from one end of a straight line runway and strike a line of marbles, is it possible to have only one marble to pop off the other end of the line at twice the speed? Why? (explain based on momentum and kinetic energy) I tried to find the momentum for the single marble and got 2mv and found the kinetic energy to be 2mv^2 but I'm not sure if it's right or how to how to explain it if it is possible or not.
- 2. Explain these apparent violations of the Conservation Laws. (a) Two asteroids of equal mass and opposite velocities strike each other head on, stick and stop moving. Does this violate Conservation of Energy? Where did their kinetic energy go?(b) A billiard ball hits the table wall and bounces off in the opposite direction. Was momentum conserved? What caused the momentum of the ball to change?The asnwer was incorrect and I recieved the following as feedback: "You may have used the nonrelativistic (low-speed) expression for momentum. That is not justified in the present case."The impulse-momentum theorem relates impulse to the change in momentum. I need help with all the questions. 1. Give the formula for impulse in terms of force: J = __________ Give the formula for impulse in terms of momentum: J = __________ 2. In a car collision, the driver’s body (80 kg) must change from a high value (40 m/s) to zero. What is the person’s initial momentum? _______ Final momentum? _____ Impulse? ______ If the person comes to a stop over 2 s, what is the stopping force? _______ If the person comes to a stop over 3 s, what is the stopping force? _______ Given this, explain how a car’s airbag protects you. _________________________________ 3. You throw a 400 g lump of clay at 10 m/s against a wall. The clay sticks to the wall. What is the initial momentum? ________ Final momentum? ________ Impulse? ________ You throw a 400 g rubber ball at 10 m/s against a wall. The ball rebounds at 8 m/s. What is the initial momentum?…
- help on two part question A. If a 10 kg mass, moving at 5 m/s to the right, hits and sticks to a 16 kg mass, moving at 19 m/s to the right, and they travel off together at the same speed to the right, find that speed. B. If a 5 kg mass, moving at 7 m/s to the right, hits and sticks to a 19 kg mass, moving at 6 m/s to the left, and they travel off together at the same speed, find that speed.Please do parts 3, 4 and 5! A mass of a 0.5kg ball is dropped from a building (g=9.81ms^-2). 1-How much time will pass if it fell 6m? 2-What is the speed and the change in momentum of the ball after it has fallen 6m? The ball hits the ground and bounces at an angle of 50° towards another building and is now traveling at 8 ms^-1 3-What are the x- and y-components of the ball below the horizontal? 4-What is the change in momentum of the ball during the collision? Find answer in vector with a magnitude and direction 5-What is the average force of the ball during the collision if the collision took 0.05 s? Find answer in vector with a magnitude and directionHow do I solve #10 using momentum/velocity model?