Physics 151 Week 2 Day 3 Topics Motion Diagrams & Motion Graphs

Slides:



Advertisements
Similar presentations
Physics 31 Lecture 4.
Advertisements

Kinematics The branch of mechanics that studies the motion of a body without caring about what caused the motion.
3-instvelacc Review Three cars are starting on a 30-mile trip. They start at the same time, and arrive ½ hour later. Slow start, then becoming faster Fast.
Objectives Describe motion in terms of frame of reference, displacement, time, and velocity. Calculate the displacement of an object traveling at a known.
Physics Review - answers Accelerated motion, free-fall, and the Law of Inertia.
Physics 151 Week 3 Day 2 Topics Motion Diagrams & Motion Graphs
Graph this (assume motion along a line)
Motion diagrams Position and time Velocity Scientific notation and units Vectors and motion Unit 2 Concepts of Motion and Mathematical Background Topics:
Displacement and Velocity
Lecture 5: Motion in One Dimension With Changing Velocity
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Motion diagrams Position and time Velocity Scientific notation and units.
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Motion diagrams Position and time Velocity Scientific notation and units.
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. The kinematics of motion in one dimension Problem-solving strategies Motion.
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Motion diagrams Position and time Velocity Scientific notation and units.
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Motion diagrams Position and time Velocity Scientific notation and units.
Physics 151 Week 5 Day 1 Topics Area under a velocity graph
Physics 151 Week 4 Day 2 Topics –Motion Graphs –Area under a curve (velocity to position) –Constant acceleration equations.
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Vectors, coordinate systems, and components Chapter 3 Vectors Topics:
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. The kinematics of motion in one dimension Problem-solving strategies Motion.
WHAT IS SPEED? Speed is how fast an object is moving relative to another object. A frame of reference is necessary to calculate speed. Speed depends on.
Practicing with Graphs
Graphical Analysis of Motion.
February 22, 2012 What does the slope of a Position vs. Time graph tell us? What does the slope of a Velocity vs. Time graph tell us?
8.1 The language of motion.
Physics Ch. 3 Position, Speed, and Velocity
PHYSICS MR BALDWIN Speed & Velocity 9/15/2014
UNIT 3: Motion Chapter 5: Investigating Motion Chapter 6: Applied Motion.
Chapter Representing Motion 2.
Physics 151 Week 5 Day 3 Topics Motion with constant acceleration
Match Each Position Graph to the Correct Description X (m) t (sec) X (m) t (sec) X (m) t (sec) X (m) t (sec) 1. Walk away from origin, speeding up Graph.
QuickCheck 2.1 Here is a motion diagram of a car moving along a straight road: Which position-versus-time graph matches this motion diagram? Answer: E.
Week 3 Day 2: Topics Particle Model General Motion Model
Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. The kinematics of motion in one dimension Problem-solving strategies Free.
Describing Motion: Kinematics in One Dimension. Sub units Reference Frames and Displacement Average Velocity Instantaneous Velocity Acceleration Motion.
Week 3 Day 1: Topics Particle Model General Motion Model
Chapter 1 Stop to Think / Quick Check Problems
STARTER During a road trip, in 6 hours you travel 300 miles. What is your average velocity? Average Velocity = distance travelled/time taken = 300 miles/6.
Motion, Speed, Velocity and Acceleration. VECTORS AND SCALORS ORIGIN - POINT AT WHICH BOTH VARIABLES ARE AT 0 (ZERO) MAGNITUDE – SIZE VECTORS – DIRECTION.
Motion Speed, acceleration, momentum Frames of Reference Object or point from which motion is determined Object or point from which motion is determined.
© 2010 Pearson Education, Inc. Week 4 Day 1: Topics Slide 1-7 Particle Model General Motion Model Constant Velocity Model Representations of Motion Motion.
Making Comparisons My Graph Definitions Making Predictions Grab Bag $500 $400 $300 $200 $100.
© 2010 Pearson Education, Inc. 1.What is the difference between speed and velocity? A. Speed is an average quantity while velocity is not. B. Velocity.
QuickCheck 2.1 Here is a motion diagram of a car moving along a straight road: Which position-versus-time graph matches this motion diagram? Answer: E.
Motion Graphs Position vs. time. Vocabulary Position Where you are relative to the origin (reference point/observer) Distance The total length of how.
© 2010 Pearson Education, Inc. Week 4 Day 2: Topics Slide 1-7 Particle Model Motion Diagrams Adding and Subtracting Vectors Graphically Delta v diagrams.
Physics 151 Week 5 Day 2 Topics –Motion with constant acceleration –Motion Diagrams –Motion Graphs –Area under a curve –Acceleration to velocity –Velocity.
Chapter 11: Motion Section 11.3 Acceleration.
© 2010 Pearson Education, Inc. PowerPoint ® Lectures for College Physics: A Strategic Approach, Second Edition Chapter 2 Motion in One Dimension.
What is the difference between a scalar and a vector?
© 2010 Pearson Education, Inc. PowerPoint ® Lectures for College Physics: A Strategic Approach, Second Edition Chapter 2 Motion in One Dimension.
MOTION GRAPHS.
© 2015 Pearson Education, Inc.
Motion Energy Flow in Technological Systems Unit C.
Section 2.1 Describing Motion (cont.)
© 2015 Pearson Education, Inc.
In this section you will:
Uniform Motion t (s) x (cm) v (cm/s)
Displacement-Time Graphs
To introduce Kinematics
Motion Graphs.
X t x2 At time t1 the object cannot be at two positions x1 and x2 at once. x1 t1.
In this section you will:
Ch. 2 slides Turn-a-round.ppt.
Representing Motion Chapter 2.
Graphing Motion Walk Around
QuickCheck 2.1 An ant zig-zags back and forth on a picnic table as shown. The ant’s distance traveled and displacement are 50 cm and 50 cm. 30 cm and 50.
Chapter Accelerated Motion 3.
The resulting position-time graph would look like this.
Uniform Motion t (s) x (cm) v (cm/s)
The resulting position-time graph would look like this.
Presentation transcript:

Physics 151 Week 2 Day 3 Topics Motion Diagrams & Motion Graphs Motion Definitions Velocity to position

Two Ships Passing in the Night Ships P and Q move with the position graphs shown. Both ships are at the origin at t = 0s. When does one pass the other? at t = 2 s. at t = 1 s and at t = 3 s. at t = 1 s, 2 s, and 3 s. P and Q never pass one another. Answer: A Slide 2-34

Two Ships Passing in the Night Ships P and Q move with the position graphs shown. Both ships are at the origin at t = 0s. When does one pass the other? at t = 1 s and at t = 3 s. Answer: A Slide 2-34

Two Ships Passing in the Night Ships P and Q move with the position graphs shown. Both ships are at the origin at t = 0s. Do P and Q ever have the same velocity? If so, at what time or times? P and Q have the same velocity at 2 s. P and Q have the same velocity at 1 s and 3 s. P and Q have the same velocity at 1 s, 2 s, and 3 s. P and Q never have the same velocity. Answer: A Slide 2-34

Answer Ships P and Q move with the position graphs shown. Both ships are at the origin at t = 0s. Do P and Q ever have the same velocity? If so, at what time or times? P and Q have the same velocity at 2 s. Answer: A Slide 2-35

Motion Diagrams

Representations of Motion Motion diagram (student walking to school) Table of data Graph Slide 2-9

A. B. C. D. Checking Understanding Here is a motion diagram of a car moving along a straight stretch of road: Which of the following velocity-versus-time graphs matches this motion diagram? Answer: C A. B. C. D. Slide 2-13

Answer Here is a motion diagram of a car moving along a straight stretch of road: Which of the following velocity-versus-time graphs matches this motion diagram? Answer: C C. Slide 2-14

A. B. C. D. Checking Understanding A graph of position versus time for a basketball player moving down the court appears like so: Which of the following velocity graphs matches the above position graph? Answer: C A. B. C. D. Slide 2-15

Answer A graph of position versus time for a basketball player moving down the court appears like so: Which of the following velocity graphs matches the above position graph? Answer: C C. Slide 2-16

Can you move? Fill in the tables for these motion events by indicating whether or not a motion event is possible.  If it is, give an example.  If not, explain why not. Displacement Final Position Possible? Example/Explanation Not 0 Average Speed Average Velocity Possible? Example/Explanation Not 0 Answer: B Slide 1-7

There and Back You and a friend decide to drive to Las Vegas, Nevada on Saturday over Labor Day weekend to go to a concert with some friends who live there. You figure you have to reach the vicinity of Las Vegas by 6 PM in order to meet your friends for dinner before the concert. It's 574 miles from UNM to the Las Vegas strip. You'd like to stop for lunch and gas bout noon. What does your average velocity need to be? It's almost all highway driving from here to Las Vegas. If you keep your speed approximately constant, what speed should your speedometer read while you are driving? After you return to UNM, what is your displacement from the time you left to go to Las Vegas? What is the total distance traveled? What is your average speed and velocity? Answer: B Slide 1-7

Where’s the train? A train is moving at a steady 30 m/s. At t = 0, the engine passes a signal light at x = 0. Without using any formulas, find the engine's position at t = 1s, 2s, and 3s. Express your reasoning in words. Slide 2-34

Velocity to Position: Example 1 Find the position at times t = 1, 2, 3, 4, and 5 seconds. Assume x (t = 0 sec) = 0 m. What is the displacement of the object between t = 1s and t = 3 s? Answer: A Slide 2-34

Velocity to Position: Example 2 Describe in words the motion of the object whose velocity graph is given below. What is happening at t = 2 s? Draw a motion diagram of the objects motion. Draw the corresponding position vs. time graph. Assume initial position is 5 m. Give an example of an object that would move this way Answer: A Slide 2-34

Acceleration Acceleration is: The rate of change of velocity The slope of a velocity- versus-time graph Slide 2-20

Reading Quiz If Sam walks 100 m to the right, then 200 m to the left, his net displacement vector points to the right. to the left. has zero length. Cannot tell without more information. Answer: B Slide 1-6

Answer If Sam walks 100 m to the right, then 200 m to the left, his net displacement vector points to the left. Answer: B Slide 1-7

Reading Quiz Velocity vectors point in the same direction as displacement vectors. in the opposite direction as displacement vectors. perpendicular to displacement vectors. in the same direction as acceleration vectors. Velocity is not represented by a vector. Answer: A Slide 1-8

Answer Velocity vectors point in the same direction as displacement vectors. Answer: A Slide 1-9