Ekins P7A Lab 4

1. What are the equations for linear momentump and kinetic energy K? Please define the variables. 2. Please define concisely and in your own words the concept of conservation. Describe conservation of momentum and kinetic energy. 3. Briefly describe the difference between elastic and inelastic collisions and give an example of each. Describe these collisions in terms of the kinetic energy and momentum. 4. A moving object collides with and sticks to a stationary object. Do the combined objects move slower, faster or at the same speed as the original moving object? 5. What is the expected value of the ratio of the final and initial momenta, pf/p; ?

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SC 24: Module 4 Assignment Booklet 48 For questions 17 to 21, read each question carefully. Decide which of the choices BEST answers the question. Place your answer in the blank space given. 17. Two vehicles with the same mass and travelling the same speed in opposite directions hit head on. What is the total momentum immediately after the collision? A. zero B. double that of each car C. one half that of each car D. four tirnes that of each car Use the following diagram to answer questions 18 and 19. Car B Car A nt Bookl ence 24

I Review I Three objects A, B, and C are moving as shown in the figure below (Figure 1). Assume that vA = VB = 9.0 m/s, and vc = 3.2 m/s. 12.0 m/s, Part C Find the x-component of the net momentum of the particles if we define the system to consist of B and C. Express your answer in kilogram meters per second. ΑΣφ ? Px = kg · m/s Submit Request Answer Part D Figure 1 of 1 Find the y-component of the net momentum of the particles if we define the system to consist of B and C. Express your answer in kilogram meters per second. B60° ? 5.0 kg 6.0 kg 10.0 kg Py = kg · m/s Submit Request Answer Gutɔtivn15 a5ktu iIL TIEW Sunjttt5 uu TIOt Coulnt agalist youi qut5tIOIT COUTIC.

1. What is the definition of momentum? 2. What conditions must be satisfied for momentum to be conserved?

1. What is the Law of “Conservation of Linear Momentum” and its formula? What is the condition of “Conservation of Kinetic Energy in Collision”? 2. Objects M and m with velocities V and v collide each other elastically. If their velocities after collision are V’ and v’ write the equation of linear momentum of the system before and after the collision and drive V’ from it. 3. Write Theoretical and Experimental formulas of “Fractional Energy Loss”.

1. 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?

Suppose a cart with mass m and low friction wheels is moving to the right with an initial speed V just before it hits a cart with mass M at rest.After collision the first cart rebounds to the left and with the speed of 2/3 v . Assume that each cart receives zero net momentum from external interactions other than their collision interaction. A.what impulse did the interaction deliver  to each cart .express the impulse dimensions as left or right as the magnitude as multiple s of mv B.use this information to calculate M as multiple of m

Help Hide smartermarks.com 7. Use the following number association: 1 = vector 2= scalar Identify the following as a vector or scalar quantity, by matching it with the appropriate number. Momentum is a quantity. (a) Kinetic energy is a Impulse is a Time is a The values for a, b, c, and d are and Your answer: 0000 Use the following information to answer the next two questions An atom of thorium, initially at rest, decays into two particles with one particle having a mass 24 times greater than the other particle. Immediately after the thorium atom decays, the larger particle moves to the left with a velocity of 2.70x104 m/s. 8. The magnitude of the velocity of the particle with less mass, expressed in scientific notation, is a.bc x 10d m/s. The values of a, b, c and d are. and (Record your answer in the numerical-response section below.) Your answer: 0000 9. The system can be considered because EPIC O GAMES MacBook Air quantity. (b) quantity. (c) quantity. (d) i tv 32 Smarter Marks ::…

A. Perfectly inelastic collisions Figure 1 shows the schematic of the set up for this part of experiment. Before the collision, cart 2 should be at rest. motion detector added mass cart 1 velcro track cart 2 mass of cart 1: 1009.6 g g mass of cart 2: 510 measured velocity of cart 1 before collision: 0.642 m/s measured velocity of the carts after the collision: 0.379 m/s expected velocity of the carts after the collision, based on conservation of momentum: (show calculation here) percent difference between measured and expected final velocities: measured total kinetic energy before the collision: measured total kinetic energy after the collision: 0.4265 11.14/0 m see

select the statements which is true for momentum. choose all that apply.   A. Momentum is the product of mass and velocity. That means object with huge mass is at rest has no momentum at all.   B. Momentum is only conserved in collisions   C. Momentum is a vector quanity.   D. Momentum is always conserved.

True or False? 1. You can change an object's momentum without changing its mass or velocity 2.The coefficient of restitution be negative. 3.When the coefficient of restitution is equals 0, it means that the objects stick together after collision. 4.When the coefficient of restitution is equals 0, it means that the objects stick together after collision.

A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay and appears as kinetic energy of the proton and electron. The mass of a proton is 1836 times the mass of an electron. Part A What fraction of the total energy released goes into the kinetic energy of the proton? Express your answer as a percentage. Kp Krot %

Please answer all the problems.

1. In determining the magnitude of the initial velocity of the ballistic pendulum projectile, what conservation laws are involved and in which parts of the procedure? 2. Why is it justified to say that the momentum in the horizontal direction is conserved over the collision interval? Is momentum conserved before and after the collision? Explain. 3. Why are the heights measured to the center of mass of the pendulum-ball system? 7. For a given initial velocity, how does the range of a projectile vary with the angle of projection 0?

1 Z :: F1 @ 2 W S Question 6 of 14 View Policies Current Attempt in Progress Number i Given the quantities a = 5.9 m, b = 9.9 s, c = 97 m/s, what is the value of the quantity d = a³ ch² X eTextbook and Media Save for Later 0: F2 # 3 00: E D 80 Q F4 F Units JAN 20 A % 5 V 9 F5 T G ^ 6 c F6 Y & 7 H ← F7 00 8 Attempts: 0 of 5 used DII F8 ( 9 F9 K -/6 Submit Ans F10 L

Constants Periodic Table Carla holds a ball 1.5 m above the ground. Daniel, leaning out of a car window, also holds a ball 1.5 m above the ground. Daniel drives past Carla at 40 mph and, just as he passes her, both release their balls at the same instant. Part A Whose ball hits the ground first? O The balls will hit the ground simultaneously. Daniel's. Carla's. The answer can't be determined from the data provided.

B4

A ball of mass 0.470 kgkg moving east (+x+xdirection) with a speed of 3.84 m/sm/s collides head-on with a 0.235 kgkg ball at rest. Assume that the collision is perfectly elastic. 1.What is be the speed of the 0.470-kgkg ball after the collision? Express your answer to three significant figures and include the appropriate units. 2. What is be the direction of the velocity of the 0.470-kgkg ball after the collision? East or west? 3.What is the speed of the 0.235-kgkg ball after the collision? Express your answer to three significant figures and include the appropriate units. 4.What is the direction of the velocity of 0.235-kgkg ball after the collision? East or west?

A 110-kilogram tackler traveling at 2.5 m/s makes a head-on collision with and successfully carries an 88-kilogram halfback traveling at 5.0 m/s. Part A How fast will they be going together just after they smash into each other? Include the correct units and round your result to two major numbers. Submit 31 Value = v' Units Requested: O

mentum - Assessment 1. A box collides with a ball as shown in the diagram below. After the collision, what will the final momentum of the ball be? BEFORE COLLISION 4. 15 kgm/s Mass of car A 10kg 3 kgm/s Mass of car B 2. A student is performing a series of experiments where he hits two toy cars together and records the initial and final velocities of each. Using the data he collected below, how does the total momentum before the cars hit compare to the total momentum after? Before the cars hit each other Before the cars hit each other 20kg Velocity of car A 2m/s cument A - Mass of the two cars Velocity of car B 1m/s AFTER COLLISION 5 kgm/s ment B-Speed of two cars before crash Blue Toyota Prius (your friend's car) Black Ford F-150 (victim's car) Mass of car A After the cars hit each other 10kg Blue Toyota Prius (your friend's car) Black Ford F-150 (victim's car) _kgm/s Mass of car B 13 kgm/s because this Closed isolated System, the System momentum is con 20kg Velocity of Car A After the…

How would I solve this using the momentum impulse model?

How do you solve this?

1. If two particles have equal kinetic energies, are their momenta necessarily equal? Explain. 2. If two particles have equal momenta, are their kinetic energies necessarily equal? Explain. 3. An isolated system is initially at rest. Is it possible for parts of the system to be in motion at some later time? If so, explain how this might occur. 4. If two objects collide and one is initially at rest, is it possible for both to be at rest after the collision? Is it possible for one to be at rest after the collision? Explain. 5. Is it possible to have a collision in which all of the kinetic energy is lost? If so, cite an example. 6. Consider a perfectly inelastic collision between a car and a large truck. Which vehicle loses more kinetic energy as a result of the collision? 7. A piece of mud is thrown against a brick wall and sticks to the wall. What happens to the momentum of the mud? Is momentum conserved? Explain.

Activity 1. A 0.60N bullet with a velocity of 360 m/s strikes a 90N block of wood moving a velocity of 10m/s in the direction opposite that of a bullet. If the bullet imbeds itself in the block, determine their resulting velocity. -10m/s = 360m/s 90N 0.60N

Physics

Q3/ The figure below shows the position of two balls separating in opposite directions after a perfectly elastic collision. Assume the balls have different magnitudes on their velocities and masses before collision. Momentum after collision a. Indicate the direction of the momentum of each ball after collision b. Were the two balls both moving or can one be initially at rest before collision? To answer this, choose sample initial velocities representing both cases C. Solve each situation using the formulas for elastic collision d. Analyze your answer in (b) by comparing your results in (c)