has only ONE correct answer. Write only the letter (A–D) next to the question number (2.1–2.10) in the ANSWER BOOK. 2.1 A car of mass m collides head-on with a truck of mass 2m. If the car exerts a force of magnitude F on the truck during the collision‚ the magnitude of the force that the truck exerts on the car is … A 2.2 An object moves in a straight line on a ROUGH horizontal surface. If the net work done on the object is zero‚ then … A. the object has zero kinetic energy. B. the
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Main idea #2: In an isolated system‚ momentum before a collision is equal to momentum after the collision. When one object exerts a force on a second object‚ the second one exerts a force on the first that’s equal in strength and opposite in direction. When you have an isolated system with no external forces‚ the initial total momentum of the objects before the collision equals the final total momentum of the objects after the collision. Because the forces must be equal and the time the objects
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deer population. Deer management is a necessity. Without a plan‚ the effects to Maryland’s natural ecosystem and the farming and agricultural communities could be devastating and costly‚ not to mention lead to an increase in deer related vehicle collisions. The over population of the white tailed deer has had a significant impact on the ecology of the forest and the Chesapeake Bay. Studies done by the Department of Natural Resources show that the over grazing of ground level vegetation by deer‚ has
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windshield). Since the belt applies force on a wide range of the body‚ less pressure would be involved‚ and the passenger would experience less pain. The seatbelts are also designed to stop the passenger from moving forward too much in the event of a collision‚ because this may let the passenger collide with the wheel instead. By having more
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96819-1906 Drop-Off Location: Honolulu International Airport 3055 N Nimitz Hwy Honolulu 96819-1906 Driver: roland Sparling Confirmation: Special Requests: None requested 687398762COUNT Summary of Charges USD 160.00 Collision Damage (4 days x 11.00) Insurance: Collision Damage Insurance is provided by United States Fire Insurance Company Amount Paid Now Taxes and fees: USD 41.35 Amount Due at Pick-up: USD 201.35 Honolulu International Airport‚ USA - Other September 24‚ 2014 1:00 PM Honolulu
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to drive with caution‚ allows streets to be safe for children and other pedestrians‚ prevents collisions‚ and gives
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Bandwidth Estimation for IEEE 802.11-Based Ad Hoc Networks Cheikh Sarr‚ Claude Chaudet‚ Guillaume Chelius‚ and Isabelle Gue´ rin Lassous Abstract—Since 2005‚ IEEE 802.11-based networks have been able to provide a certain level of quality of service (QoS) by the means of service differentiation‚ due to the IEEE 802.11e amendment. However‚ no mechanism or method has been standardized to accurately evaluate the amount of resources remaining on a given channel. Such an evaluation would‚ however
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What is momentum? Momentum of a body is defined as the mass multiplied by the velocity of this object. Momentum= m x v Momentum and Newton’s second law of motion: The resultant force is proportional to the change in momentum per a second. We know that force = mass x acceleration. So F (mv-mu)/t F m (v-u)/t = ma so F=kma Momentum is a vector quantity: Momentum has a direction as well as a magnitude Momentum and Newton’s first law of motion: An object remains at
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was once a part of a continental collision about 1.7 billion years ago when volcanic islands collided in the south west of America‚ where the North American plate is now. Mountain building occurred about 75 million years ago when the uplift of almost 2 miles in the region‚ (called a Laramide orogeny event) started and created the Colorado Plateau. The rocks in the Grand Canyon were igneous or sedimentary rocks before the collision of tectonic plates. The collision pushed the plates under the earths
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present in a single lump. A small heap of fine magnesium powder tends to burn rather more slowly than a strip of magnesium ribbon‚ for example. Imagine a reaction between magnesium metal and a dilute acid like hydrochloric acid. The reaction involves collision between magnesium atoms and hydrogen ions. How does surface area affect a chemical reaction? If one of the reactants is a solid‚ the surface area of the solid will affect how fast the reaction goes. This is because the two types of molecule can
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