Lesson Objectives • Calculate mass, velocity, or momentum given the other two quantities. • Describe impulse and how it relates to momentum. • Solve problems involving impulse. • Analyze and compare the momentum and impulse of different objects.
Momentum • The momentum of an object is equal to its mass times its velocity • Is represented by a lower case “” • Is a vector (has magnitude and direction) • Has units of kg· m/s – Equivalent to N· s
Think-Pair-Share • Which of the following has the most momentum? The least momentum? a) A parked 18-wheeler truck b) A baseball immediately after it is hit c) A proton in the Large Hadron Collider (LHC) traveling near the speed of light d) A charging rhinoceros
Momentum Equation
= = =
1
11/10/2016
Think-Pair-Share • Momentum is ______________ proportional to mass.
You-Try #1 • Suppose a truck has a momentum of kg∙m 42,825 north and a mass of 1250 kg. s What is the truck’s velocity?
• Momentum is ______________ proportional to velocity.
You-Try #2 • Suppose a 1380 kg speedboat is traveling east at 14.2 m/s. What is the speedboat’s momentum?
Think-Pair-Share • Order the following from least momentum to greatest momentum: A. = 0.45 kg, = 25 m/s B. = 0.45 kg, = 15 m/s C. = 0.45 kg, = 50 m/s D. = 0.45 kg, = 0 m/s E. = 0.45 kg, = 40 m/s
You-Try #3 • A 4825 charging rhinoceros has a momentum kg∙m of 6.90 × 10 s south. What is the rhino’s velocity?
Impulse • The impulse acting on an object is equal to the force acting on it multiplied by the time interval over which it acts • Is represented by a capital “” • Is a vector (has magnitude and direction) • Has units of N· s – Equivalent to kg∙m/s
2
11/10/2016
Impulse Equation
= Δ
You-Try #4 • A volleyball player’s hand applies a 52.0 N force upward while in contact with a volleyball for 0.825 s. What is the impulse on the ball?
Δ Δ = =
Newton’s Second Law, again = Δ = Δ Δ = Δ Assuming constant mass: Δ = Δ = Δ
Example 5 • A baseball has a mass of 0.145 kg. A pitcher throws it with a velocity of − 41.3 m/s. The bat hits the ball with a force of 130. N for 0.100 seconds. What is the ball’s velocity after it leaves the bat?
Impulse-Momentum Theorem • The net impulse acting on an object is equal to the object’s change in momentum = Δ
Δ = − "
You-Try #5 • A hockey puck has a mass of 0.115 kg. A player hits it towards the goal with a velocity of − 28.7 m/s. The puck misses the goal, and instead hits the goalpost with a force of 73.6 N for 0.0700 seconds. What is the puck’s rebound velocity?
3
11/10/2016
Think-Pair-Share • Explain, using the physics terms and equations from this section, the purpose of a car’s airbags.
Collisions • For a set initial and final velocity, the change in momentum is constant. • Increasing the collision time will decrease the magnitude of the force. • Decreasing the collision time will increase the magnitude of the force.
Determine the impulse (I), momentum change (Δp), momentum (p) and other values. A 7-ball collides with the 8-ball. A moving medicine ball is caught by a girl on ice skates. A car is at rest when it experiences a forward propulsion force to set it in
https://sites.google.com/site/mrhphysics/home. Vocabulary Terms. elastic collision. A collision between two or more objects in which both momentum and kinetic ...
Page 1 of 7. Momentum. Note: +/â Direction. matters for Force and. for Momentum. Momentum doesn't really have a great conceptual. definition. It's best defined with an easy mathematical. definition (or "formula"), shown below... * Notice the vector
Introduction to Momentum & Impulse. If inertia is a property of motion, then momentum is a quantity of motion. Momentum is a measurement of an object's motion. It is a vector quantity (magnitude and direction) and it is found as the product of an obj
MCS-041 : OPERATING SYSTEMS. Time : 3 hours ... (a) Discuss the linked and index file allocation schemes. Which allocation scheme is used in UNIX OS? 10.
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Impulse Notes.
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Impulse ...
University of Manitoba .... work on team climate (Anderson & West, 1998) as an antecedent of innovation has become increasingly .... Displaying 041.pdf. Page 1 ...
MCS-041 : OPERATING SYSTEMS. Time : 3 hours ... following types of operating systems : (i). Batch. (ii) ... ordering in a distributed system with an example. 6.
Perform the vulnerability assessment of any two. Computer Systems of the Network and apply any 4 attacks on the specified hosts and generate the lists of impacts for those attacks. Also prepare the Audit Report. 40. 2. Make the password protected fol
Overconfidence. Introduction. Example. Results. Variants. Evolution. Model. People report 80 .... Principal wants agents with the most accurate private signals to.
Dec 15, 2012 - Data archives. Scientific analytic papers. Survey instruments. Administrative data collection. Other forms of data collection. Outline: the structure of the .... Form of access (web access, file transfer, remote statistical analysis ..
Control of the synchronising device page 3. Voltage regulation page 3. Frequency regulation page 3. Synchronising pulse page 3. Check synchroniser page 4.
Page 1 of 15. www.ignousite.blogspot.com. Course Code : BCS-041 Course. Title : Fundamentals of Computer Networks Assignment. july 2016 - january 2017.
Dec 15, 2012 - (Tarki Social Research Institute, Budapest) with contributions by .... Project websites ... content, frequency, etc. so that all will understand the.
Principally finite impulse response system identification based on HOC of system output has received more attention [1, 2, 3]. In the literature we have important results [6], established that blind identification of finite impulse response (FIR) sin
Deliver to: Austin Independent School District. Contract and Procurement Services. 1111 West 6th Street. Building A, Suite 330. Austin, TX 78703. Contact: ...
Aug 31, 2009 - Avi Ziskind1 asked me to cover non-commuting operators in quantum mechanics, specifically why angular momentum operators do not commute. He pointed out that Griffiths [1] gives an intuitive argument for understanding why position and m