| | |Year 12 Math C assignment | |Overtaking | | | | | |
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take the first digit of your speed‚ add it to the total speed and double it. Speed + 20 mph First Digit = Perception/Reaction Distance + 2 = 22 feet x 2 = 44 feet In other words‚ at 20 miles per hour‚ your vehicle will travel 44 feet in the time it takes you to see a hazard and move your foot from the accelerator to the brake pedal. The faster you’re going‚ the further your vehicle will travel before you can hit the brakes. Speed + 55 mph 65 mph
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KINEMATICS IN ONE DIMENSION chapter Section 2.1 Displacement Section 2.2 Speed and Velocity 1. A particle travels along a curved path between two points P and Q as shown. The displacement of the particle does not depend on- Q (a) The location of Q. (b) The location of P. (c) The direction of Q from P. P (d) The distance traveled from P to Q. Ans. (d) 2. For which one of the following situations will the path length
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Distance Time Graphs Definitions * Speed: Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time. * Velocity: Velocity is a vector quantity that refers to "the rate at which an object changes its position." When evaluating the velocity of an object‚ one must keep track of direction. It would not
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Concept-Development Practice Page 4-1 Free Fall Speed 1. Aunt Minnie gives you $10 per second for 4 seconds. How much money do you have after 4 seconds? $40 2. A ball dropped from rest picks up speed at 10 m per second. After it falls for 4 seconds‚ how fast is it going? 40 m/s 3. You have $20‚ and Uncle Harry gives you $10 each second for 3 seconds. How much money do you have after 3 seconds? $50 4. A ball is thrown straight down with an initial speed of 20 m/s. After 3 seconds‚ how fast is it
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during the last trial also. E.g. the normal heart rate was 20 H.B. per 15.38 seconds while the heart rate after adrenaline was added was 20 H.B. per 6.70 seconds. This proves that adrenaline excites the neurotransmitters and causes the heart rate to speed up. But this data is not precise because during the lab‚ the heart could not be clearly seen in each of the Daphnia. For example‚ after measuring the heart rate of one daphnia‚ you had to add more adrenaline around the Daphnia to measure how adrenaline
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mechanics box- with pulley‚ black variable speed cart‚ Xplorer GLX (captures‚ analyzes‚ annotates‚ and stores data quickly and seamlessly‚ without being connected to a desktop computer)‚ 50g mass‚ string‚ meter stick‚ colored tape‚ and scissors. With the above materials students were able to run the four experiments. For experiment students turned on the Xplorer GLX‚ put the motion detector at the end of the silver track‚ and aimed the black variable speed cart away from the motion detector.
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displacement versus time for a car approaching a red traffic light and then leaves it as the light turn green. 2. Jimmy took 8 hrs to drive his Civic from KL to Kota Bharu which was about 400 km away. What was the average speed of Jimmy in km/h? Why‚ in this case was the term average speed used over velocity? 3. A ball rolls with a velocity of 20 m/s on the ground and comes to a stop in 3 minutes. (a) Determine the ball’s acceleration. (b) How far does the ball moves before coming to a stop? 4. A particle
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up as he goes. Position –Time Graph ______________________ Velocity-Time Graph Explanation for graph’s appearance –after actually performing the activity. Instead of starting at zero (where he was in A)‚ the man started at -8 under the tree. His speed was increasing at a constant rate so the graph shows him moving in a positive direction from the tree. Explanation for graph’s appearance - after actually performing the activity. Since he is speeding up at a constant rate‚ then his velocity is steadily
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intersection. On January 22‚ 2011‚ Felicia Harris was on her way home from work. She was driving East on Highway 43 approaching the intersection of Highway 43 and Sharon Road. Upon reaching the intersection she was driving at a high rate of speed ignoring the speed suggestion signs. By the time she began to apply her brakes it was too late‚ she was into the curve of the road and over compensated to gain control and veered off the road crashing head on into a tree. Unfortunately Felicia did not survive
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