operations. | Vectors cannot be added‚ subtracted and multiplied following simple arithmetic laws. Arithmetic division of vectors is not possible at all. | Example: mass‚ volume‚ time‚ distance‚ speed‚ work‚ temperature | Example: displacement‚ velocity‚ acceleration‚ force | Distance and displacement Distance is defined as the ground covered by a moving object during its motion. Its SI unit is metre (m). It has only magnitude‚ but no direction. Distance can never be negative. The minimum value
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reference point for the position vector‚ it is enough to specify the coordinates x‚ y and z. For a moving object the position vector is a function of time. Velocity & Acceleration • Velocity is defined as the change in position over a change in time; thus the average velocity is and the instantaneous velocity is • For motion in one dimension the velocity is the slope of the position line plotted versus time. • The same logic is used in deriving the average and instantaneous acceleration resulting in: •
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that the x-component of its velocity has the constant value vx = C; that is‚ x = Ct i. On the diagram above‚ indicate the directions of the particle’s velocity vector v and acceleration vector a at point R‚ and label each vector. ii. Determine the y-component of the particle’s velocity as a function of x. iii. Determine the y-component of the particle’s acceleration. b. Suppose‚ instead‚ that the particle moves along the same parabola with a velocity whose x-component is given
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length in 10 seconds. Calculate a) speed‚ b) velocity. 5. A car travels 10 m in 5 seconds‚ 20 m in next 10 seconds and 30 m in the last 10 seconds. Find the average speed of the car. 6. A body moving in a circle of radius r covers 3/4th of the circle. Calculate the ratio of distance to displacement. 7. A train is moving with a velocity of 36 km/h. Find the distance travelled by the train in a) 1 hour‚ b) 1 minute. 8. An electron moving with a velocity of 5×104 ms-1 enters into a uniform electric
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Question What would the participant’s acceleration be if he/she sprints forward in a positive direction? Hypothesis/Prediction When a person sprints forward‚ it means he/she speeds up. Consequently‚ the acceleration should be positive. When the velocity accelerates at a constant rate‚ the acceleration should remain constant. Therefore‚ if the participant is moving toward a positive direction and the speed increases‚ then the acceleration should be positive and constant. Materials * Ticker
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Remedial Physics------------------------------------Review Questions -------------------------------------Chapter 2 Quantitative Problems 1) An object moves 15.0 m north and then 11.0 m south. Find both the distance traveled and the magnitude of the displacement vector. A) 6.0 m‚ 26.0 m B) 26.0 m‚ 4.0 m C) 26.0 m‚ 26.0 m D) 4.0 m‚ 4.0 m 2) A boat can move at 30 km/h in still water. How long will it take to move 12 km upstream in a river flowing
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Objective: To study the relationships between position‚ velocity‚ and time‚ with acceleration held constant‚ of an object moving in one-dimensional motion with minimum friction. A motion sensor will be used to measure various aspects of vector quantities. Description: An Air Track is positioned along the edge of the table. It is a long straight metal beam with many small holes that are roughly each 2mm in diameter. It is positioned at an angle to allow the gliders to glide down the slope
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used by February 17 PROBLEM Multiple Choice Short Problem 1 Short Problem 2 Short Problem 3 Short Problem 4 Short Problem 5 Short Problem 6 Total POINTS 40 10 10 10 10 10 10 100 SCORE Page 1 of 11 UIC PHYSICS 105 Spring 2013 Practice Exam 1 MULTIPLE CHOICE QUESTIONS (2 points each) Clearly circle the letter of the best answer MCQ 1: The figure to the right represents the position of a particle as it travels along the x-axis. At what value of t is the velocity of the particle equal
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face:•Language problems: This is the most common among international students and especially among those whose native language is not English. Along with this the problem‚ understanding ascent and slangs adds up more to it. •Cultural differences: Due to difference in the culture also‚ some problems come. For e.g. Here people are more open with each other no matter its male or female‚ which is not the case in countries like Pakistan (there it’s very severe problem). •Funds problem: Another big problem among
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physics 5/23/13 Constant motion Fill in the Blank (constant velocity) 1)Neither( ) nor ( ) of motion changes 2)y7ui8z Vocabulary Matching 3) A)how fast something moves; an expression of how much time it takes for a change in position to occur; rate of motion; rate of change of position( ) B)The speed of an object in a particular direction; ratio of change in position to time interval over which change takes place.( ) C)quantity having
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