CHECK ACTIVITY ON MOTION 1. A car speeds up from 40 km/h to 55 km/h to overtake a truck. If this requires 15 s‚ what is the (a) acceleration and (b) distance traveled by the car? 2. Albert is riding his scooter at a velocity of 80 km/h when he sees an old woman crossing the road 45 m away. He immediately steps hard on the brakes to get the maximum acceleration of 7.5 m/square second. how far will he go before stopping? Will he hit the old woman? 3. the time a male bungee jumper if freely
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this is because it has more time to accelerate. We hope to find out from our results that the golf balls acceleration is the same as gravity which is 9.81 ms². We intent on showing this through the Suvat equation which is V²=U²+2as where ‘a’ is acceleration. Suvat equations were made by Gottfried Leibniz‚ Suvat stands for displacement (S)‚ Initial velocity (U)‚ Final velocity (V)‚ Acceleration (A) and Time (T). As I said we are using the equation V²=U²+2as‚ but we have to re-arrange this equation
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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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B) 1.3 s C) 5.3 s D) 7.3 s E) 9.3 s 0=16-9t2 t2=16/9 t=1.33 s 4. Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t) = 27t – 4.0t3‚ where t is in seconds. At the end of 1.0 s the acceleration of the auto is: A) 27 m/s2 B) 4.0 m/s2 C) –4.0 m/s2 D) –12 m/s2 E) –24 m/s2 at= -24t 5. Each of four particles move along an x axis. Their coordinates (in meters) as functions of time (in seconds) are given by | particle 1:
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vertical motions which are independent from each other‚ known as vector components. For an object to be considered a projectile‚ it must not be self-propelled. Projectiles move horizontally at a constant velocity. However‚ they undergo uniform acceleration in the vertical direction‚ which is caused by gravity. An important aspect of projectile motion is that the time it takes for the object to travel on the Y axis is exactly the same as the time it takes to travel on the X axis. A practical example
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better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China. The first explosive mixture was black powder‚ during the Sung dynasty (960-1279). It is said that a cook in ancient China found
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When someone today mentions rocketry or rockets‚ most people immediately think of NASA and space travel. However‚ rocketry or rockets or rockets were being studied long before NASA began. Rockets were first described by an Italian in 1379 and in the early 15th century‚ the French reported extensive use of war rockets. Perhaps the most far reaching development in rocketry occurred in 1687 when Sir Isaac Newton detailed what became to be known as the Universal Laws of Motion. What Newton described
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a factor in the practical has a big impact on the outcomes that you get‚ as there is nothing acting against gravity hence a greater acceleration the object has. Having Air Resistance However having air resistance also changes the outcome of the practical because the air resistance is acting against the force of gravity hence the object has less acceleration and once the air resistance is stronger then the terminal velocity that is when the object is going at a small velocity. Terminal
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their relationship was soon restored. Some of the conflict between Homer and his father was his father’s views of rockets being a “childish thing” and wanted Homer to work in the coal mine just as he did. Homer’s father John also believed that football was more important than Homer’s rockets which lead to favouritism and sibling rivalry towards Homers brother. Homer’s father John saw rockets as a childish thing and a waste of time as did quite a lot of the town’s people. Most of them didn’t like the
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Summer Assignment Revision –Term 1 Grade:9 Answer as many as possible: 1) State universal law of gravitation. Express it mathematically. 2) Differentiate between G‘ and g‘ in tabular form. 3) (a) What is acceleration ? Write its unit. (b) Draw velocity-time graph‚ when an object has (i) uniformly accelerated velocity. (ii) uniformly retarded velocity. 4) Prove that if a body is thrown vertically upward‚ the time of ascent is equal to the time of descent. 5) The earth attracts the moon. Does the moon
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