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IPC 4a

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IPC 4a

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    1. IPC 4a Calculate speed, momentum, acceleration, work, and power in systems such as in the human body, moving toys, and machines;

    2. Formula Chart

    3. When solving a problem--- First read the problem carefully and list what you know and what you are solving for. Second identify the formula from the formula chart that includes what you are given. You may have to rearrange the formula to solve for the unknown quantity.

    4. Which formula? The weight lifter used a force of 980 N to raise the barbell 2.04 m over her head in 5.21 seconds. Approximately how much work did she do in raising the barbell? Approximately how much power did the weight lifter exert lifting the barbell in 5.21 seconds? What is the momentum of a 40 kg bike riders moving at 45 km/h? What is the mass of a 500.00 mL sample of seawater with a density of 1.025 g/mL?

    5. Which of the following weightlifters does the most work on a 100-pound barbell when lifting the barbell over his or her head? A. A weightlifter who is 5 feet 8 inches tall B. A weightlifter who is 6 feet 0 inches tall C. A weightlifter who is 6 feet 2 inches tall D. A weightlifter who is 6 feet 4 inches tall

    6. Which of the following changes would not increase power? A decrease in the time it takes to do work. A decrease in the distance over which a force is applied An increase in the force applied An increase in the work added

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