After 2 s‚ a second ball is thrown straight downwards. What should be the initial velocity of the second ball so that both hit the water simultaneously ? 1) 2.45 ms-1 2) 49 ms-1 3) 14.5 ms-1 4) 24.5 ms-1 3. Which of the following are true ? 1. A body having constant speed can have varying velocity. 2. Position time graphs for two objects with zero relative velocity are parallel. 3. The numerical ratio of velocity to speed of an object can never be more than one. 1) 1 only 2) 2 and 3 3) All 4) None
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| 4.0 | Average Velocity m/s | 0 | 1.75 | 3.1 | 4.3 | 7.05 | 8 | Acceleration m/s/s | | | 6.75 | 12.75 | 13.75 | 4.75 | MOON Time (s) | 0 | 0.4 | 0.8 | 1.2 | 1.6 | 2.0 | Distance (m) | 0 | 0.34 | 1.0 | 1.27 | 1.64 | 2.6 | Average Velocity m/s | 0 | 0.85 | 1.65 | 0.68 | 0.93 | 2.4 | Acceleration m/s/s | | | 2.0 | -2.4 | 0.63 | 3.68 | MARS Time (s) | 0 | 0.3 | 0.6 | 0.9 | 1.2 | 1.5 | Distance (m) | 0 | 0.51 | 1.02 | 1.34 | 2.07 | 2.68 | Average Velocity m/s | 0 | 1.7 | 1
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When an object (stone‚ spear‚ arrow or bullet) is thrown‚ hurled or shot in the air‚ the object is a PROJECTILE (“Projectile”). The study of projectile is important because it must be realized that they are very much part of man’s daily life then and now. Whether man likes it or not‚ he encounters and uses projectile in his everyday life. Our hunting ancestors threw stones and spears on animals to kill them for their food. In today’s sports‚ balls follow projectile motion such
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the distance from the edge of the table to the end of the ramp. • Roll the ball down the ramp and off the table but make sure to catch the ball as soon as it leaves the table; do this part 10 times and record the times • Calculate average velocity for this step • Measure the height (vertical distance or the y-axis) of the table. • Using this height‚ derive t (time) from the uniform accelerated motion in order to obtain the predicted distance x. • The next step is to release
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edges the acoustic flow velocity amplitude is comparable to the main flow velocity. A two-dimensional potential flow model based on the vortex blob method‚ used to simulate the flow in the junction‚ describes accurately the flow visualization and laser Doppler data obtained in pipes with square cross-sections and with sharp edged junctions. The numerical simulation is used to calculate the acoustical power generated by the vortical flow at a given amplitude of the acoustic velocity field and Strouhal number
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Reading Assignment #1: Vector Analysis Textbook Sections that I read: 2.1-3 Important Concepts: An interaction between two objects can be described and measured in terms of two forces. The force is a push or either a pull. There are two types of forces. #1 is a long range force and this force does not require the objects involved to be touching each other. An example of this is when you are holding a magnet away from a refrigerator and you are able to feel the magnetic pull. #2 is a contact force
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popular seems to be the stair climber machine. If a stair climber machine is going to be designed the information needed to be collected would vary widely. One would need to compute its angle of incline. Other things needed are the maximum and minimum velocities‚ the distance‚ vertical height of the machine‚ and a stopwatch to count the amount of time a person uses it. To calculate the weight of a person in Newtons a scale would be used. The reason the angle of incline of the machine is so important is
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The Effectiveness of Pro-market Reforms‚ Ownership Structure and The Institutional framework at Addressing the Agency Problem and how Different Types of Firms in Transition Economies are affected by these measures. As economies grow‚ in order for businesses to retain market shares‚ they can no longer rely on organic growth‚ many seek external finance either through initial public offerings or through banks‚ mutual funds and insurance companies. Although there are many side benefits of pursuing
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of design will experience three phases of apparent weight: the lifting‚ falling and braking stages. At first‚ the rider will feel heavier as the carriage accelerates. Then‚ as the velocity is constant‚ the apparent weight will equal that of the real weight. Finally‚ as the ride slows at the top‚ the decreasing velocity will result in a lighter feel. During free fall‚ riders will feel weightless‚ before experiencing a dramatic increase in apparent weight during the braking stage. As the ride climbs
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each of these situations? Remember that if an object speeds up‚ then the velocity and acceleration vectors are in the same direction. If an object slows down‚ then they are in opposite directions. Any object that is traveling in a vertical direction also experiences acceleration due to gravity. Left: Object travels to left and speeds up. Down: Object is tossed upward. A ball is tossed up into the air with a velocity of 50 m/s. The figure to the left shows the position of the ball at equal
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