Midterm Review Name: ______________________________ Date: ___________ Circle Period R1 R2 R3 S1 S2 S3 Chapter 1 – About Science Vocabulary: Define each term. Fact: Hypothesis: Law: Theory: Check Concepts: 1. Why is physics the most basic science? 2. Why is mathematics important to science? 3. Is a scientific fact something that is absolute and unchanging? Defend your answer. Chapter 2 – Mechanical Equilibrium Vocabulary: Define each term. Force: Net Force: Vector:
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1 Introduction ANSWERS TO MULTIPLE CHOICE QUESTIONS 1. Using a calculator to multiply the length by the width gives a raw answer of 6783 m 2 ‚ but this answer must be rounded to contain the same number of significant figures as the least accurate factor in the product. The least accurate factor is the length‚ which contains either 2 or 3 significant figures‚ depending on whether the trailing zero is significant or is being used only to locate the decimal point. Assuming the length contains 3 significant
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that the velocity going out of the control volume is equal to the velocity coming in. Additionally‚ the elevation difference within the control is assumed to be negligible. The vertical force caused by the jet is balanced by the mass placed on the weight pan. (2) The initial velocity of the jet‚ v0‚ is : (3) From Bernoulli’s equation‚ the jet velocity‚ v‚ in
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Have you ever ridden on a rollercoaster and felt your heart drop as you were going downhill? Have you asked yourself how getting these feelings were possible? The answer is math. You may ask what math has to do with rollercoasters. Math is the reason for everything and anything that has to do with rollercoasters. Without math‚ it would be impossible to even be able to create one. To build a rollercoaster you need to be able to use numbers when talking about the costs‚ taking measurements‚ calculating
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uniform velocity of an object moving along a straight line. What will be shape of velocity time and position time graphs of such a motion? 10. Why fruits fall down from a tree‚ when its branches are shaken? OR Why is spring made of steel not of copper? 11. A light body and a heavy body have the same momentum . Which one will have greater kinetic energy? Justify. 12. A projectile is thrown with a velocity 5 ms¯¹at
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measured force vs time graph. Data: Item | Value | Mass of Cart | 516g | Impulse | .35N | Velocity before | .343 m/s | Velocity after | -.318 m/s | Momentum before | .177 kg m/s | Momentum after | -.163 kg m/s | change | -.340 kg m/s | Questions: 1.Why is it desirable to have the same initial speed for each data run? If speed differs‚ the momentum will be effected. As velocity increases‚ momentum increases. 2.How will raising the end of the Dynamics Track give the cart the same
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Theory The first experiment focused on the concept of errors and uncertainties that are obtained during measurements. For an experiment to be successful‚ especially those that involve measurements‚ the number of significant figures must be known. Significant figures are the digits required to express a measured quantity and thus reflect the accuracy of the measurement. Uncertainty is defined as the smallest increment that can be measured and is defined by the instrument used. An error is defined
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to give you wide understanding on the different concepts regarding Constant and Uniformly Accelerated Motion. Upon finishing the SIM‚ the reader is expected to: • identify the motion of an object in terms of distance or displacement‚ speed or velocity‚ and acceleration UNDESPICABLE MECHANICS CHANICS GUIDE CARD ACTIVITY CARD ENRICHMENT CARD ASSESSMENT CARD REFERENCE CARD UNDESPICABLE MECHANICS GUIDE CARD The Guide card presents the big picture‚ I’ll give you the overview
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Creative Problem Solving Sample Corporate Training Materials All of our training products are fully customizable and are perfect for one day and half day workshops. You can easily update or insert your own content to make the training more relevant to participants. Our material is completely customizable and is backed up by a 90 day 100% no questions ask money back guarantee! With our training courseware you are able to: • • • • • Add your name and logo (and remove ours) Add your own content
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Grade 9 Science – Trolley Lab -‐ Luca Weller – AOI: Environment – 17/9/13 D.4 Materials: -‐1 trolley that will be accelerated -‐1 string to connect the trolley and the weights (ca. 2m) -‐1 set of weights that will accelerate the trolley (up to 5N) -‐1 a.m
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