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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KINEMATICS REVIEW LESSON EXAMPLE 1: Consider the velocity vs. time graph below. The motion of five different people (A‚ B‚ C‚ D‚ and E) are shown on the graph. Study the graph and answer the following questions. Some questions may have more than or less than one answer. Question: 1. Which person(s) changes direction during the time of motion? 2. Which person(s) is/are not moving? 3. Which person has the greatest average speed? 4. Which person(s) has/have a constant‚ positive acceleration
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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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vertically; there is no horizontal deceleration in the absence of aerodynamic forces. Acceleration is the same regardless of the weight of the implement. Therefore‚ the vertical velocity of a projectile decreases by 9.8 m/s every second. Linear Acceleration Acceleration is a measure of the time rate of change of velocity. Acceleration can be caused by a change in speed or direction or both. For example‚ a skater who goes from a standstill to full speed quicker than another skater has greater acceleration
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PHY 1103 Physics I RKMC - HCT Learning Outcome 1: Sub-outcome 1: Assign given basic units to their corresponding physical quantities. All engineers must use the same language in their communications‚ and one of these universal communication tools is the units of measurements. Physical quantities such as length‚ weight‚ time‚ speed‚ force‚ and mass are measured with standard units. Therefore the magnitude if a physical quantity is given by a number and standard unit of measurement
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becomes taut. Calculate the impulse in the string when it jerks tight. (3 marks) (2 marks) 2. Particle A has velocity (8i – 3j) m s-1 and particle B has velocity (15i – 8j) m s-1 where i and j are perpendicular‚ horizontal unit vectors. (a) (b) (c) Find the speed of B. Find the velocity of B relative to A. (2 marks) (2 marks) Find the acute angle between the relative velocity found in part (b) and the vector i‚ giving your answer in degrees correct to 1 decimal place. (2 marks) 3. A
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is 1.5 meters long‚ find the average speed of the ball. 5. * A stone tied on a rope has a frequency of 27 rpm. Find the average speed of the stone if the rope is 12 meters long. Centripetal Acceleration (ac) – the rate of change of tangential velocity; standard unit is meters per square second (m/s2); ac = v2/r = vω Sample Problem: 5. A metal ball is attached to a 1-m long string and is whirled to make 3 revolutions per second with the other end as the center. How much acceleration will the
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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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includes the air resistance and different kinds of errors caused by students’ carelessness is different from the theory‚it is unaviodable that the results are quite different from the theoretic statistics. The horizontal velocity is related to the range‚ while the vertical velocity is related to the maximum altitude. This experiment can help us reinforce the concepts related to the motion in two dimensions although the water rocket does not have the ideal situation. A lot of equations we learned in
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