Experiment #2 Data Collection Objectives: Exercise 1: Formulating a Hypothesis about pitching speed. To form a hypothesis for the pitching velocity of a ball. Use a spreadsheet and math to calculate the actual velocity and determine the accuracy of the hypothesis. I will also roll a large ball to measure its velocity and graph its horizontal motion. Materials: Volley Ball Computer Softball Large Open Space Mitt Stop Watch Chair
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Apparatus objects to drop‚ stopwatch‚ meter stick‚ Pasco motion sensor Procedure Each group will get 1 object record the balls mass Using a meter stick measure a height (distance) that you are going to drop your ball. Making sure that your initial velocity of the ball is 0 m/s‚ drop the ball and measure (using the stopwatch) the time that it takes to hit the ground. Repeat at least 5 times (discard any really bad measurements) Calculate average time Use the kinematic equation - d vit at2 to calculate
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will need to use the formula s=d/t (s= speed‚ d=distance‚ t=time). On the other hand‚ for accelaration you will use the formula a= vf-vi/t (a=acceleration‚ vf=final velocity‚ vi= initial velocity‚ t=time). Average speed is how fast something is moving; the path distanced moved per time. Acceleration is the rate of which velocity is changing‚ the change may be in magnitude‚ direction‚ or both. Materials & Procedures: The materials you will need for this experiment are: -3 people -stopwatch
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Breaking distances: Introduction: Drivers must pay attention to their surroundings. This includes calculating the braking distance from the cars and objects around a driver. With this the driver can avoid accidents and can save lives and money. As shown in the picture above. The prime factors that apply that have a big impact on the actual stopping distances in the real world: Weather‚ road conditions‚ type and condition of vehicle‚ load etc ‚ not to mention the age‚ health and mental ability
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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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10 MIXING AND AGITATION gitation is a means whereby mixing of phases can be accomplished and by which mass and heat transfer can be enhanced between phases or with external surfaces. In its most general sense‚ the process of mixing is concerned with all combinations of phases of which the most frequently occurring ones are A 7. gases with gases. 2. gases into liquids: dispersion. 3. gases with granular solids: fluidization‚ pneumatic conveying‚ drying. 4. liquids into gases: spraying and atomization
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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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between B and C in metres per second. Show clearly how you work out your answer. (3) 3 A cyclist is travelling along a straight road. The graph shows how the velocity changes with time for part of the journey. [pic] a Explain how is acceleration found from a velocity–time graph. (1) b Copy and complete the following sentences using the list of words and phrases below. Each one can be used once‚ more than once or not at all. is
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3 Question 1 (Marks: 20) On a straight‚ flat section of road‚ a car follows a truck. Initially (t < 0)‚ both are travelling at speed v0 = 90 k.p.h. The truck maintains constant speed throughout. The car is initially 2.0 seconds behind the truck‚ i.e. for t < 0 the car
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