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- i. Draw the balls and the approximate momentum vectors before and after the collision. ii. What is the final velocity of the second ball, v'2? iii. Is the collision elastic? What is the energy loss in the collision?A 5 kg ball moves at 5m/s in the +x direction and hits a 2kg stationary ball at the origin. After the balls collide, the lighter ball has a final velocity of 3.6m/s directed 49 degrees from the x axis as shown in the picture. 1. Figure out the speed (v') and direction (theta) of the heavier ball after the collision 2. Is the collision elastic or inelastic? Explain your answer in 3 sentences or less. 5 kg 5 m/s 2 kg To 49° 3.6 m/s X1. Explain your answers to the following: a. Can the velocity change without changing the acceleration? b. Can the kinetic energy be constant if an object is accelerating? c. Can the momentum change without changing the kinetic energy?
- III. Conservation of Momentum A. Directions: Study and analyze the figure below and answer the questions that follow. Show your solution. V= 2.5 m/s 4 kg 4 kg А B Ilustrated by: Keith N. Alejandro Figure 2. Collision of balls with equal masses Situation 1: BallB is at rest. 1. What will be the velocity of ball B after, if: a. the collision is perfectly elastic? RICH ACY MENT b. the collision is perfectly inelastic? AS OF EDU Situation 2: Ball B travels twice the velocity of ball A. 2. What will be the velocity of ball B after, if: a. the collision is perfectly elastic? b. the collision is perfectly inelastic? AS EXCEL TION ** DEPA 80: A L1. You are standing perfectly still, and then you take a stepforward. Before the step your momentum was zero, but afterward you have some momentum. Is the principle ofconservation of momentum violated in this case? 2. Does the center of mass of a rocket in free space accelerate? Explain. Can the speed of a rocket exceed the exhaustspeed of the fuel? Explain. 3. Early in the twentieth century, Robert Goddard proposedsending a rocket to the moon. Critics objected that in avacuum, such as exists between the Earth and the Moon,the gases emitted by the rocket would have nothing topush against to propel the rocket. According to ScientificAmerican (January 1975), Goddard placed a gun in a vacuum and fired a blank cartridge from it. (A blank cartridge contains no bullet and fires only the wadding andthe hot gases produced by the burning gunpowder.)What happened when the gun was fired?Given two balls, each of mass m, traveling together at speed v, what is the total linear momentum of this two-ball system? What is the total kinetic energy? B.If the balls from the previous question strike three stationary balls (as in your previous tests), what is the total linear momentum of the ball(s) that are in motion after the collision? What is the total kinetic energy? C. Is it possible for two balls (mass m each, speed v) to strike a line of balls and have a single ball (mass m) “scatter” from the other end of the line with twice the speed (speed 2v)? What would be the momentum of the single ball? What would its kinetic energy be?
- Ball 1 traveling at a velocity v, was made to collide with Ball 2 of the same mass that was at rest. After collision, Ball 1 slowed down to a velocity of v₁ 4 while Ball 2 picked up speed. a. Following the law of conservation of momentum, what is the velocity of Ball 2 after the collision? b. What is the total kinetic energy before and after the collision?Hi, please show full solutions and also explain how you get the answers in physics terms so it's understandable. The correct final answers are written beside too. This is one whole question to be answered. I can't post it separately since it's related. Thank you. 12. A stationary 6.0 kg object blows apart into 3 pieces. The 3 pieces move away from each other on a level plane. A 2.0 kg piece moves away at 3.0 m/s [30.0º W of N] and a 1.0 kg piece moves away at 5.0 m/s [25º N of W].a) Draw a labelled vector diagram of the system after the explosion. Include all known angles, masses and speeds.b) Determine the velocity of the third piece. (3.5 m/s [44º S of E])Block A with a mass of 2kg is moving to the right at 5m/s. It collides with block B with a mass of 3kg moving at 1m/s to the left. A. What is the total momentum before collision? magnitude: direction: B. What is the total momentum after collision? magnitude: direction: C. If collision is perfectly inelastic, what is their velocity after collision? magnitude: direction: D. If block A stops moving, what is the velocity of block B? magnitude: direction: E. What is the coefficient of restitution if block A stops moving after collision with block B?
- Using this equation: p=mv, define momentum operationally. Questions: a. Which has more momentum—a jeepney at rest or a student running to attend his class? b. Between a truck and a jeepney, which has a greater momentum, considering both are running with equal velocities? a.. Hypervelocity bullet used in 0.22 long rifle usually weigh around 2.1 g and can have a speed of 550 m/s. what must be the speed of a 75 kg man to match the momentum of this bullet? b. Determine the momentum of the following animals: Animal: horse, monkey, rabbit Mass (kg): 16.8, 15.0, 15.06 Momentum (kg.m/s): ?Part II. Elastic vs Perfectly Inelastic Collision 1. Compare the total momentum before and total momentum after of elastic and perfectly inelastic collision. 2. Compare the total KE before and total KE after of elastic and perfectly inelastic collision. 3. If the velocity ofa moving body is doubled, what does this do to kinetic energy and momentum of the body? 4. A 25g ball slides down a smooth inclined plane 0.850 m high that makes an angle of 35 degrees with the horizontal. The ball slides down into an open box of 150 g mass. The ball and the box slide off the end of a table 1.0 m high. a.) How far from the base of the table will the box and ball hit the ground? b.) What is their final velocity? 0.M50 ma. Explain the Law of Conservation of Momentum. b. Identify the factors that affect the magnitude of momentum.