Quiz_ Reading_ Particle Kinetics, Impulse and Momentum

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Liberty University *

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240

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Mechanical Engineering

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Apr 3, 2024

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3/11/24, 9:44 AM Quiz: Reading: Particle Kinetics, Impulse and Momentum: ENGR240: Dynamics (001) https://canvas.liberty.edu/courses/601780/quizzes/2671247?module_item_id=60443119 1/6 Quiz: Reading: Particle Kinetics, Impulse and Momentum Due Mar 4 at 11:59pm Points 12 Questions 12 Available Feb 28 at 12am - Mar 6 at 11:59pm Time Limit 60 Minutes Instructions This quiz was locked Mar 6 at 11:59pm. Attempt History Attempt Time Score LATEST Attempt 1 32 minutes 11 out of 12 Correct answers are hidden. Score for this quiz: 11 out of 12 Submitted Feb 29 at 4:05pm This attempt took 32 minutes. Question 1 1 / 1 pts the conservation of linear impulse. the conservation of linear impulse and linear momentum. conservation of mass and velocity. the conservation of linear momentum. The quiz: Covers the Textbook material from Module 6 – Module 7 (Chapter 15) . Contains 12 multiple-choice and true/false questions. Is limited to 35 minutes . Allows 1 attempt . Is worth 12 points . The equation m ( V ) = m ( V ) is referred to as ________________________. i i 1 i i 2 Online Residential Athletics Sign In Request Info Apply Now Visit Us Create Guest Account
3/11/24, 9:44 AM Quiz: Reading: Particle Kinetics, Impulse and Momentum: ENGR240: Dynamics (001) https://canvas.liberty.edu/courses/601780/quizzes/2671247?module_item_id=60443119 2/6 Question 2 1 / 1 pts the principle of force and momentum the principle of linear impulse and momentum the principle of angular impulse and momentum the principle of force and impulse Question 3 1 / 1 pts linear momentum, impulse impulse, linear momentum angular momentum, impulse velocity product, force product Question 4 1 / 1 pts 200 Ns 250 Ns 150 Ns 300 Ns The total impulse is the area under the F-t plot, which is 150 Ns. The equation ∑∫ F dt = m V - m V (where F is force, m mass, t time, and V is velocity) is referred to as ______________________. 2 1 In the equation ∑∫ F dt = m V - m V , the terms m V and F dt are called _______________ and _____________, respectively. 2 1 If a force that varies as shown on the graph acts on a particle, what is the total impulse exerted by the force?
3/11/24, 9:44 AM Quiz: Reading: Particle Kinetics, Impulse and Momentum: ENGR240: Dynamics (001) https://canvas.liberty.edu/courses/601780/quizzes/2671247?module_item_id=60443119 3/6 Question 5 1 / 1 pts True False Yes, linear momentum L is the product of mass and velocity (given by m V ). Since m is a positive scalar quantity, L has the same direction as V . Question 6 1 / 1 pts Only the externally applied forces The forces that have larger magnitudes. Internal forces. Both internal and externally applied forces. Internal forces don't appear in the summation since they occur in equal and opposite collinear pairs, and therefore they cancel out. A particle's linear momentum is a vector quantity and has same direction as the particle's velocity. The ±gure shows a system of particles moving relative to an inertial reference frame. The forces acting on some of the particles are shown in the ±gure. Externally applied forces are represented by upper case F and internal forces are represented by lower case f letters. The principle of linear impulse and momentum for a system of particles if given by m ( V ) + ∑∫ F dt = m ( V ) . Which of the forces are included in the F dt summation? i i 1 i i i 2 i
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