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A speed-time graph shows that a car moves at 10 m/s for 10 s. The car’s speed then steadily decreases until it comes to a stop at 30 s. Which of the following describes the slope of the speed-time graph from 10 s to 30 s? A. linear, horizontal B. curved, upward C. linear, sloping downward D. linear, sloping upward
Weegy: C. linear, sloping downward 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: B. how fast a velocity is changing at a specific instant 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: The SI unit of force is the A. joule. B. kilogram. C. meter. D. newton. Weegy: The SI unit of force is the D. newton. User: When an unbalanced force acts on an object, A. the object’s motion does not change. B. the object accelerates. C. the weight of the object decreases. D. the inertia of the object increases. Weegy: 2. the object accelerates. The object will accelerate in the direction of the force vector. User: When an unbalanced force acts on an object, A. the object’s motion does not change. B. the object accelerates. C. the weight of the object decreases. D. the inertia of the object increases. Weegy: 2. the object accelerates. The object will accelerate in the direction of the force vector. User: When a pair of balanced forces acts on an object, the net force that results is A. greater in size than both forces combined. B. greater in size than one of the forces. C. equal in size to one of the forces. D. equal to zero. Weegy: D. equal to zero User: What kind of friction occurs as a fish swims through water? A. fluid B. rolling C. sliding D. static (More)
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Asked 9/30/2012 6:09:34 PM
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