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An object that is accelerating may be A. slowing down. B. gaining speed. C. changing direction. D. all of the above
Weegy: D. all of the above User: A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train’s acceleration be described? A. The train’s acceleration is positive. B. The train is not accelerating. C. The train will come to rest in 6 minutes. D. The train’s acceleration is negative. Weegy: D. The train?s acceleration is negative . User: What is instantaneous acceleration? A. how fast a speed is changing at a specific instant B. how fast a velocity is changing at a specific instant C. how fast a direction is changing at a specific instant D. all of the above Weegy: D. all of the above. Is the rate of a tangent to the slope of a graph signifying velocity versus time. It is a snapshot of acceleration at a precise moment in time based on the relative changes in velocity over time. [ It is the limit of acceleration for any given point within the displacement vector. ] User: Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration? A. 2 m/s2 B. 5 m/s2 C. 4 m/s2 D. 3 m/s2 User: The slope of a speed-time graph indicates A. direction. B. acceleration. C. velocity. D. speed. Weegy: B. acceleration User: Which of the following statements is true? A. An object that is accelerating is always changing direction. B. An object has an instantaneous acceleration, even if the acceleration vector is zero. C. An object at rest has an instantaneous acceleration of zero. D. Instantaneous acceleration is always changing. Weegy: C. An object at rest has an instantaneous acceleration of zero. User: A passenger in the rear seat of a car moving at a steady speed is at rest relative to A. the side of the road. B. a pedestrian on the corner ahead. C. the front seat of the car. D. the wheels of the car. Weegy: The answer is C. the front seat of the car so the sentence would be: A passenger in the rear seat of a car moving at a steady speed is at ... (More)
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Expert Answered
Asked 4/11/2013 7:14:45 PM
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Vector addition is used when motion involves A. more than one direction. B. more than one velocity. C. more than one speed. D. all of the above
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Updated 5 days ago|5/23/2016 1:06:29 AM
1 Answer/Comment
Vector addition is used when motion involves all of the above (more than one direction, more than one velocity and more than one speed).
Added 5 days ago|5/23/2016 1:06:29 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [5/23/2016 1:32:50 AM]
As an astronaut travels far away from Earth, her weight A. decreases because gravity decreases. B. decreases because her mass decreases. C. increases because gravity increases. D. remains the same because her mass remains the same.
Weegy: 1. decreases because gravity decreases. User: The product of an object’s mass and velocity is its A. centripetal force. B. momentum. C. net force. D. weight. Reset Selection Mark for Review What's This? Weegy: The product of an object's mass and velocity is its momentum. (More)
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Asked 4/11/2013 7:34:38 PM
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As an astronaut travels far away from Earth, her weight A. decreases because gravity decreases. B. decreases because her mass decreases. C. increases because gravity increases. D. remains the same because her mass remains the same. Reset Selection Mark for Review What's This?
Weegy: As an astronaut travels far away from Earth, [ her weight decreases because gravity decreases. target=_blank rel='nofollow'>https://docs.google.com/viewer?a=v&q=cache:hOsXrdENOm8J:' target=_blank rel='nofollow'>www.mgjhscience.net/voight/wp-content/uploads/2008/12/Gravity-Test-Answer-Key.pdf+&hl=en&gl=ph&pid=bl&srcid=ADGEESjnuI7M_ChRAj5uNiRnBb5umXlQmye3EwuhOojejKQGFPKuDmk_zh5mAxbc3kTlI7E_cLM5-ziRKb149fNRvmnXg80r7Fq5WHR4kkgkqQdt6CX2Wg5QUlZdtHbJfDyl4i8w9OIP&sig=AHIEtbR12UV8-Ulz7M5JkoGEB8NiERAgQA ] (More)
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Asked 4/11/2013 7:33:54 PM
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Infrared rays have a shorter wavelength than A. ultraviolet rays. B. X-rays. C. radar waves. D. gamma rays. Reset Selection Mark for Review What's This?
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Not Answered
Updated 9/18/2014 5:50:01 PM
1 Answer/Comment
Infrared rays have a shorter wavelength than RADAR WAVES.

Added 9/18/2014 5:50:01 PM
This answer has been added to the Weegy Knowledgebase
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