NLN PAX Science: Physics |130 QUESTIONS| WITH COMPLETE SOLUTION

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aim of physics Correct Answer: to understand the physical laws and principles that influence every aspect of daily life displacement of an object Correct Answer: the distance that an object is fr... om some starting point, and is measured in units of length How does displacement change when an object is in motion? Correct Answer: it is constantly changing How is motion described? Correct Answer: by displacement, velocity (speed) and acceleration speed Correct Answer: distance traveled by an object per unit of time speed = (distance traveled/time) velocity Correct Answer: speed in a given direction What two things does velocity tell us about a moving object? Correct Answer: its speed and direction acceleration Correct Answer: the rate of change in velocity; can be any change in velocity, either positive or negative. deceleration Correct Answer: negative acceleration or a decrease in velocity and can change in direction How is acceleration calculated? Correct Answer: (final velocity-original velocity)/time Why can velocity and acceleration be described using vectors? Correct Answer: because they have both magnitude and direction What quality do all moving objects have? Correct Answer: momentum; an object traveling at a specific velocity has momentum [Show More]

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