Equation for acceleration Acceleration Acceleration CHECK YOUR UNDERSTANDING An

Equation for acceleration acceleration acceleration

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Equation for acceleration: Acceleration =
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Acceleration CHECK YOUR UNDERSTANDING An automobile cannot maintain a constant speed when A. accelerating. B. rounding a curve. C. both of the above D. none of the above
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Acceleration CHECK YOUR ANSWER An automobile cannot maintain a constant speed when A. accelerating. B. rounding a curve. C. both of the above D. none of the above Comment: When rounding a curve, the automobile is accelerating because it is changing direction.
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Acceleration CHECK YOUR UNDERSTANDING Acceleration and velocity are actually A. much the same. B. rates, but for different quantities. C. the same when direction is not a factor. D. the same for free-fall situations.
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Acceleration CHECK YOUR ANSWER Acceleration and velocity are actually A. much the same. B. rates, but for different quantities. C. the same when direction is not a factor. D. the same for free-fall situations. Explanation: Velocity is the rate at which distance changes with time; acceleration is the rate at which velocity changes with time.
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Acceleration Free fall When the only force acting on a falling object is gravity (with negligible air resistance), the object is in a state of free fall.
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Acceleration CHECK YOUR UNDERSTANDING If a falling object gains 10 m/s each second it falls, its acceleration is A. 10 m/s. B. 10 m/s per second. C. both of the above D. neither of the above
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Acceleration CHECK YOUR ANSWER If a falling object gains 10 m/s each second it falls, its acceleration is A. 10 m/s. B. 10 m/s per second. C. both of the above D. neither of the above Explanation: It is common to express 10 m/s per second as 10 m/s/s, or 10 m/s 2 .
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Acceleration CHECK YOUR UNDERSTANDING A free-falling object has a speed of 30 m/s at one instant. Exactly one second later its speed will be A. the same. B. 35 m/s. C. greater than 35 m/s. D. 60 m/s.
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Acceleration CHECK YOUR ANSWER A free-falling object has a speed of 30 m/s at one instant. Exactly one second later its speed will be A. the same. B. 35 m/s. C. greater than 35 m/s. D. 60 m/s. Explanation: One second later its speed will be 40 m/s, which is greater than 35 m/s.
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Acceleration CHECK YOUR UNDERSTANDING The distance fallen by a free-falling body A. remains constant each second of fall. B. increases each second when falling. C. decreases each second when falling. D. none of the above
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Acceleration CHECK YOUR ANSWER The distance fallen by a free-falling body A. remains constant each second of fall. B. increases each second when falling. C. decreases each second when falling. D. none of the above Explanation: See Table 2.2 for verification of this. Falling distance time squared.
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  • Spring '14
  • AnnM.Robinson

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