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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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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blue and green arrows (also called vectors) as you drag the ball around. 1. The green line points in the direction that the ball is going to go 2. The blue line changes the direction it points. 3. The blue line also changes size depending on the speed 2) Which color vector (arrow) represents velocity and which one represents acceleration? How can you tell? The green line represents velocity because it points in the direction. The blue line is acceleration because as the ball is no longer accelerating
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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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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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drive. Suggestion: Use Notepad or Notepad++ for your text editor. Be sure to use proper naming conventions such as: EX1_10Wilson.java and EX1_11Wilson.java (1) Complete these Chapter 1 Programming Exercises on page 32 1.10 (Average speed in miles) (50 points) Use this formula in your program: double mph = ( (14 * (60/45.5))/1.6); // That is‚ (km / hr) / (1.6 km / mile) 1.11 (Population projection) (50 points) http://www.worldometers
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notebooks. Others include a glider and his helicopter-like aerial screw‚ which we’ll talk about in a few pages. parachute-The speed at which a body falls depends on two factors: the force of the gravity pulling it downward and the resistance of the atmosphere through which it is falling. If there were no atmosphere‚ a falling body would simply accelerate to higher and higher speeds until it hit a surface‚ but air tends to slow it down until it reaches its so-called terminal velocity. Different objects
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My friend David owned a motorcycle. It is not a big one‚ but it could reach a really dangerous speed. Just to remind those who like speeding‚ it is hazardous for you and other road users if you are speeding on the road. I learn this in a really painful lesson one night when I rode on the pillion on David’s motorcycle. We were on our way home one night after a movie in a cinema few kilometers away from my house‚ but the traffic on the road during our way back was badly congested. It was a benefit
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