tells us how fast an object is moving and in what direction. But what if the velocity is changing? This is whatacceleration describes-how quickly the velocity of an object is changing In this activity we will learn aboutNamesमभ पीसAcceleration ActivityPeriod6 DateSection 1Introduction, To answer the question How do things move? we can provide the velocity of a Oojecwhatwhen an object is accelerating and how to calculate the rate of acceleration.Examples of Acceleration:The following motions describe objects that are NOT acceleratingA bird flies at a constant speed of 10 m/s in a constant direction of NorthA train travels at a constant velocity of 45 mi/hr SouthA car travels along a straight section of highway at a constant 100 km/hrThe following motion describes objects that ARE acceleratingA bird, flying at a speed of 5 m/s, speeds up to 10 m/s in a constant direction of NorthA person runs at a constant speed of 3 mi/h while turning from the North to the EastA car travels along a curve while slowing down to 60 km/h from 100 km/hQuestion 1: For each of the following descriptions of motion, state whether the description indicates aspeed, a velocity, an acceleration, or none of these.DescriptionsVariableA domestic cat can run as fast as 13 m/sWe are located at the corner of Los Alisos and Mustang RunAn airplane is moving west at 200 km/hThe 100 mi trip took 2 hA drag racer, starting from rest, reaches a speed of 100 mi/h in 4 sA person is at rest.A cyclist went from traveling at 15 m/s north to 15 m/s east in 20 sQuestion 2: What are the two ways that an object can accelerate?Question 3: The chart below shows several descriptions of motion. For each one, indicate the following:Whether the object has a constant or changing velocityWhether the object has is accelerating or not acceleratingWhether the object has a constant or changing speed

Name: tells us how fast an object is moving and in what direction. But what
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Description: tells us how fast an object is moving and in what direction. But what if the velocity is changing? This is whatacceleration describes-how quickly the velocity of an object is changing In this activity we will learn aboutNamesमभ पीसAcceleration Activ

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Descriptions Variable A domestic cat can run as fast as 13 m/s We are located at the corner of Los Alisos and Mustang Run An airplane is moving west at 200 km/h The 100 mi trip took 2 h A drag racer, starting from rest, reaches a speed of 100 mi/h in 4s A person is at rest. A cyclist went from traveling at 15 m/s north to 15 m/s east in 20 s

Descriptions Variable A domestic cat can run as fast as 13 m/s We are located at the corner of Los Alisos and Mustang Run An airplane is moving west at 200 km/h The 100 mi trip took 2 h A drag racer, starting from rest, reaches a speed of 100 mi/h in 4s A person is at rest. A cyclist went from traveling at 15 m/s north to 15 m/s east in 20 s

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter1: The Study Of Motion

Section: Chapter Questions

Problem 21Q: (Indicates a review question, which means it requires only a basic understanding of the material to...

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A monkey hanging from a tree branch sees a hunter aiming a rifle directly at him. The monkey then sees a flash and knows that the rifle has been fired. Reacting quickly, the monkey lets go of the branch and drops so that the bullet can pass harmlessly over his head. Does this act save the monkey’s life? Why or why not? (Hint: Consider the similarities between this situation and that of Exercise 24.11.)
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . The following are speeds and headings displayed on a GPS receiver, (Heading gives the direction of motion based on north = 0°, east = 90°, south = 180°, etc,) In each case, indicate whether the receiver was accelerating during the time between the displays and, if it was, describe in what way the receiver was accelerating. (a) Initially: 60 mpht 70°; 5 seconds later: .50 mph, 70°. (b) Initially: .50 mph, 70°; 5 seconds later: 70 mph, 70°. (c) Initially: 60 mph, 70°; 5 seconds later: 60 mph, 90°.
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) A woman is riding on a train while watching the display on her GPS unit. She notices that both the speed’ and the “speed” readings are not changing. What can the stir conclude about the net force acting on the train car?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) Scenes in films or television programs sometimes show people jumping off moving trains and having unpleasant encounters with the ground. If someone is on a moving flatbed train car and wishes to jump off, how could the person use the concept of relative speed to make a safer dismount?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . During 200-meter and 400-meter races, runners must stay in lanes as they go around a curved part of the track. If runners in two different lanes have exactly the same speed, will they also have exactly the same centripetal acceleration as they go around a curve? Explain.
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) - A swimmer heads for me opposite bank of a river. Make a sketch showing the swimmer's two velocities and the resultant velocity.