Practice Projectiles (Source for the first five problems WWW.MIAMI-BEST-MATH-TUTOR.COM‚ 1. 1. A physics book slides off a horizontal table top with a speed of 1.10 m/s. It strikes the floor in 0.350 s. Ignore air resistance. Find the height of the table top above the floor; the horizontal distance from the edge of the table to the point where the book strikes the floor; the horizontal and vertical components of the book’s velocity‚ and the magnitude and direction of its velocity‚ just before
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The blue vector is accelerating toward the center. The green vector is perpendicular due to being tangent along the path of the circle. 4) Now move the ball at a slow constant speed across the screen. What do you notice now about the vectors? Explain why this happens. The vectors are not noticeable. The speed remains constant therefore there would not be acceleration. Velocity
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AP Physics HW #1 Multiple Choice 1. A car travels 30 miles at an average speed of 60 miles per hour and then 30 miles at an average speed of 30 miles per hour. The average speed the car over the 60 miles is (A) 35 m.p.h. (B) 40 m.p.h. (C) 45 m.p.h. (D) 10 m.p.h. (E) 53 m.p.h. Answer: B. Method: Vavg = Δx/Δt The average speed is the total distance traveled‚ divided by the total time. They give us all distances traveled is‚ so we just need to find the time. We find the time‚ by applying
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seconds. How many more seconds will he take to pass the remaining 4 flags ? 2. A person has to cover the fixed distance through his horses. There are five horses in the cart. They ran at the full potential for the 24 hours continuously at constant speed and then two of the horses ran away to some other direction. So he reached the destination 48 hours behind the schedule. If the five horses would have run 50 miles more‚ then the person would have been only 24 hours late. Find the distance of the destination
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SAMPLE PROBLEMS: 111-SET #1 VECTOR ADDITION‚ SUBTRACTION 01-1 1). A man is able to row a boat at 3 mph in still water. If he rows his boat pointed straight across a river with a current of 4 mph‚ what is his net velocity? If the river is 0.5 miles wide‚ at what point will he land on the other side? Solution: The first step in problem solving is to identify the problem type. In this problem we are asked for a ‘net velocity.’ Since velocities behave as vectors‚ then we have a vector addition
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Name:David B. Victorioso Year/section:IV-Acacia Date:Saeptember 16‚2013 Teacher:Mrs.Noceda Age Problem Problem 1 An eagle is 4 times as old as a falcon. Three years ago‚ the eagle was 7 times as old as the falcon. Find the present age of each bird. Solution x = falcon’s age now 4x = eagle’s age now {the eagle is 4 times as old as falcon} x - 3 = falcon’s age 3 years ago 4x - 3 = eagle’s age 3 years ago 4x – 3 = 7(x – 3) {three years ago‚ eagle
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leaps at an angle of 35° with respect to the horizontal. What is the minimum initial speed that would allow the athlete to clear the gap? Neglect air resistance. SOLUTION 1. DEFINE Given: ∆x = 6.0 m q = 35° g = 9.81 m/s vi = ? Unknown: 2. PLAN Diagram: v θ = 35° ∆x = 6.00 m Choose the equation(s) or situation: The horizontal component of the athlete’s velocity‚ vx ‚ is equal to the initial speed multiplied by the cosine of the angle‚ q‚ which is equal to the magnitude of the horizontal
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Michigan entrepreneur Justin Eric Sutton brings us into the era of clean hydrogen energy and solar energy‚ by producing a remarkable high speed MAGLEV railway which is being sold throughout the USA for deployment on Elevated Superhighway Rails‚ it speeds travelers between metro areas at up to 250+ MPH‚ in this remarkable vision of the not so distant future! Not only would it revolutionize energy AND transportation‚ it is both feasible and deployable TODAY. All that remains is funding and agreements
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crate will hit the Camaro. 2. The crate will continue to fly and will not crash. 3. The crate will not hit the Camaro‚ but will crash a distance beyond it determined by the height and speed of the plane. 4. The crate will hit the front part of the car. 003 10.0 points A ball is thrown horizontally at speed v0 from the top edge of a cliff of height h. Neglecting air resistance‚ which statement is wrong? 1. The time it takes for the ball to hit the ground does not depend in any way on v0
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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. Likewise‚ a skater who can stop quicker than another skater has greater deceleration--assuming both skaters were traveling at the same speed. Another example of acceleration is a skater who travels at a constant speed around the ice rink. In the corners‚ when this skater is changing direction
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