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Physics Graphing Review Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) Keys to Reading Graphs: 1. What are the labels on the axes? 2. What type of graph it is? 3. How is the line changing and what does this mean? Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) Graphing Practice Activity We will be working in pairs, that means two people! As the graphs are passed, go to that number on your worksheet and answer each question. Your pair will have two minutes with each graph. Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) What type of graph is this? Position v. time How is the object’s position changing? It is moving further away. Predict position at t = 5 seconds. 17 m Displacement (m) Is velocity constant, why or why not? Velocity is not constant because its displacement is changing a different amount each second. #1 20 18 16 14 12 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the acceleration changing? The acceleration is not changing. 14 12 Acceleration (m/s2) Describe the velocity of the object? The velocity of the object is constant. It could be moving at 1,000 MPH or not moving at all. #2 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the velocity changing? The velocity is constant. #3 14 What is happening to the object’s position? The object is moving further away. 12 Velocity (m/s) What is the object’s acceleration? The acceleration is zero because it is not speeding up or slowing down. 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) Is the object’s acceleration constant? No, because the acceleration is increasing. Predict the object’s acceleration at t = 5 seconds. 𝐦 14 12 Acceleration (m/s2) How is the acceleration changing? The acceleration is increasing. #4 The acceleration will be 12 𝟐 at 𝐬 t = 5 seconds. 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the velocity changing? The velocity is not changing, it 𝐦 is 0 𝟐. #5 14 𝐬 What is happening to the object’s position? The object’s position is not changing; it is sitting still. Velocity (m/s) What is the object’s acceleration? The acceleration is zero because the velocity is not increasing or decreasing. 12 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) Is the object’s acceleration constant? Yes, the acceleration is not 𝐦 changing, it is 3 𝟐 . #6 14 12 How is the acceleration changing? The acceleration is not changing. Describe the velocity of the object. The velocity is increasing by 3 𝐦 each second. 𝐬 Acceleration (m/s2) 𝐬 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the velocity changing? The velocity is decreasing. 𝐬 When will the object’s velocity be 0 m/s? The velocity will be zero at t = 5 seconds. 16 14 12 Velocity (m/s) What is the object’s acceleration? The object is slowing down so it has a negative acceleration of 𝐦 -3 𝟐 #7 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the object’s position changing? The position is not changing. The object is sitting still. 14 12 Displacement (m) What is the object’s velocity? The velocity is zero since it is not moving. #8 10 8 6 4 2 0 0 1 2 3 Time (seconds) 4 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the acceleration changing? The acceleration is decreasing by 2 each second. Describe the object’s acceleration at t = 4 seconds. The acceleration at t = 4 𝐦 seconds will be 0 𝟐 . 𝐬 Acceleration (m/s2) Is the object’s acceleration constant? No, the acceleration is changing. #9 20 18 16 14 12 10 8 6 4 2 0 0 1 2 3 Time (seconds) 4 Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) How is the velocity changing? The velocity is increasing. #10 Predict the object’s velocity at t = 5 seconds. The object’s velocity will be 𝐦 35 𝐬 Velocity (m/s) Is the acceleration constant? The acceleration is not constant because the velocity is increasing a different amount each second. 24 22 20 18 16 14 12 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 What is happening to the location of the object? The object is getting closer to the observer. Is the object’s velocity constant? The velocity is constant because the displacement changes the same amount each second. At what time will the object hit the observer? It will hit the observer at 4.5 seconds. Displacement (m) Distinguish the motion of an object by its position, direction of motion, speed, and acceleration and represent resulting data in graphic form in order to make a prediction. (2c) #11 20 18 16 14 12 10 8 6 4 2 0 0 1 2 3 4 Time (seconds) 5 Physics Newton’s Laws Review Recognize Newton’s Three Laws of Motion and identify situations that illustrate each law (e.g., inertia, acceleration, action, reaction forces). (2f) Keys to Newton’s Laws: 1. Objects keep doing what they’re doing unless an outside force acts = First Law 2. Force = mass x acceleration = Second Law 3. For every action there is an equal and opposite reaction = Third Law Recognize Newton’s Three Laws of Motion and identify situations that illustrate each law (e.g., inertia, acceleration, action, reaction forces). (2f) Newton’s Laws Practice: 1. An object that weighs 25 kg pushed with a force of m 100 N will accelerate at 4 2 = s Newton’s Second Law 2. A jet engine pushes air with 10,000 N of force backward. The air pushes the jet with 10,000 N of force forward = Newton’s Third Law 3. A ball rolling across a field will slow down and stop because of friction = Newton’s First Law Recognize Newton’s Three Laws of Motion and identify situations that illustrate each law (e.g., inertia, acceleration, action, reaction forces). (2f) Newton’s Laws Practice: 4. A 2,000 kg Ford F-150 pushes backward on the road with 10,000 N of force. The truck’s acceleration = Recognize Newton’s Three Laws of Motion and identify situations that illustrate each law (e.g., inertia, acceleration, action, reaction forces). (2f) Newton’s Laws Practice: 5. Using the scenario described in #4, the action = force of the truck on the road and the reaction = force of the road pushing on the truck Recognize Newton’s Three Laws of Motion and identify situations that illustrate each law (e.g., inertia, acceleration, action, reaction forces). (2f) Newton’s Laws Practice: 6. Reason the road does not move, but the truck does move in #4 = the truck has less inertia than the road.