Connect to Internet !! to be notified about an update when newpapers are available, stay connected to the internet8.QUESTIONSWrite neatly and legibly.Copyright reserved(15070402)QUESTION 1: DYNAMICSDifferentiate between a scalar quantity and a vector quantity.1.11.2Define the term velocity1.3ANSWERSPlease turn overThe diagram below describes the motion of a body taking place in a straightline.Displacement (m)80061016 18-40-Time(s)-80-120-1.3.1Determine the velocity during the first 8 seconds.(2)1.3.2Describe the movement between the 8th and 12th second.(1)1.3.3Determine the total distance travelled from the diagram.(1)1.3.4Determine the displacement from the diagram.(2)1.4A brick is dropped vertically downwards from the top of a building at 3 m/s toreach the ground after 5 s.Calculate the height of the building.(3)1.5An object is accelerated uniformly from 35 km/h to 105 km/h in 12 s.Calculate the acceleration of the object.(3)[15]Copyright reservedIII=Please turn over<(1)

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Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter1: A Physics Toolkit

Section1.2: Mathematics And Physics

Problem 14SSC

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Similar questions

A trapper walks a 5.0-km straigt4ine distance from his cabin to the lake, as shown in the following figure. Use a graphical method (the parallelogram rule) to determine the trapper’s displacement directly to the east and displacement directly to the north that sum up to his resultant displacement vector. If the trapper walked only in directions east and north, zigzagging his way to the lake, how many kilometers would he have to walk to get to the lake?
between points in a plane do not change when a coordinate system is rotated In other words, the magnitude of a vector Is invariant under rotations of the coordinate system. Suppose a coordinate system S is rotated about its origin by angle to become a new coordinate system S’, as shown in the following figure. A point in a plane has coordinates (x,y)in S and coordinates (x,y) in S’. (a) Show that, during the transformation of rotation, the coordinates in S are expressed in terms of the coordinates in S by the following relations: {x=xcos+ysiny=xsin+ycos (b) Show that the distance of point Pto the origin is invariant under rotations of the coordinate system. Here, you have to show that x2+y2=x2+y2. (c) Show that the distance between points Pand Q is invariant under rotations of the coordinate system. Here, you have to show that ( xP =xQ )2+( yP yQ )2=( xP =xQ )2+( yP yQ )2 .
An adventurous dog strays from home, runs three blocks east, two blocks north, one block east, two block north, and two blocks west. Assuming that each block is about 100 m, how far from home and in what direction is the dog? Use a graphical method.
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) A woman is riding on a train while watching the display on her GPS unit. She notices that both the speed’ and the “speed” readings are not changing. What can the stir conclude about the net force acting on the train car?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . The following are speeds and headings displayed on a GPS receiver, (Heading gives the direction of motion based on north = 0°, east = 90°, south = 180°, etc,) In each case, indicate whether the receiver was accelerating during the time between the displays and, if it was, describe in what way the receiver was accelerating. (a) Initially: 60 mpht 70°; 5 seconds later: .50 mph, 70°. (b) Initially: .50 mph, 70°; 5 seconds later: 70 mph, 70°. (c) Initially: 60 mph, 70°; 5 seconds later: 60 mph, 90°.
Convert 13.7 billion yeans (the age of the Universe) to the appropriate SI unit. Be sure to report your answer with the correct number of significant figures.
The layout of the town of Popperville is a perfectly square grid, with blocks 100 feet long (Fig. P3.8). A cat leaves her house and travels to Mike Mulligans place 4 blocks west and 3 blocks north of its starting point. After lapping up the milk that Mike always leaves out, the cat travels an additional 1 block north and 3 blocks east to Mrs. McGillicuttys house. a. On your paper, carefully copy the grid of streets that contains the cats house, Mike Mulligans house, and Mrs. McGillicuttys house. Then draw and label three displacement vectors on your sketch: r1, the cats displacement from her house to Mike Mulligans; r2, the cats displacement from Mike Mulligans to Mrs. McGillicuttys; and rtot, the cats total displacement. b. Write an equation to relate the three displacement vectors you have drawn. c. Is the distance the cat traveled greater than, less than, or equal to the magnitude of the cats total displacement vector? Explain. FIGURE P3.8
A truck is traveling east at 80 km/h. At an intersection 32 km ahead, a car is traveling north at 50 km/h. (a) How long after this moment will the vehicles be closest to each other? (b) How far apart will they be at that point?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . During 200-meter and 400-meter races, runners must stay in lanes as they go around a curved part of the track. If runners in two different lanes have exactly the same speed, will they also have exactly the same centripetal acceleration as they go around a curve? Explain.
A fly enters through an open window and zooms around the room. In a Cartesian coordinate system with three axes along three edges of the room, the fly changes its position from point b(4.0m,1.5m,2.5m) to point e(1.0m,4.5in,0.5m) . Find the scalar components of the fly’s displacement vector and express its displacement vector in vector component form. What is its magnitude?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A basketball player shoots a Free throw. Make a sketch showing the basketball's velocity just after the ball leaves the player's hands. Draw in two components of this velocity, one horizontal and one vertical. Repeat the sketch for the instant just before the ball reaches the basket. What is different?
Fill in the blanks of this little story with the names of the appropriate elements BeSTe OF LuCK In YOURe SeArCH! "The poor fellow crashed his (Ag)__________________________ (Ne)_____________________________ into a wall. Luckily, a good (Sm) ____________________________ came along and tried to (He)______________________________________, but, alas, it was too late. All the hapless rescuer could do was (Ba)_____________________in a (Kr)_____________________the hill nearby."

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