This question paper consists of 16 pages and 4 data sheets.

INSTRUCTIONS AND INFORMATION

|1. |Write your centre number and examination number in the appropriate spaces on the ANSWER BOOK. | | | | | | | | | |Answer ALL the questions in the ANSWER BOOK. | | | |2. | | | | | |This question paper consists of TWO sections: | | | |3. | | | | | |SECTION A (25) | | | | |SECTION B (125) | | | | | | | | | |You may use a non-programmable calculator. | | | |4. | | | | | |You may use appropriate mathematical instruments. | | | |5. | | | | | |Number the answers correctly according to the numbering system used in this question paper. | | | |6. | | | | | |Data sheets and a periodic table are attached for your use. | | | | | | | | |7. |Give brief motivations, discussions, et cetera where required. | | | | | | | | |8. | | | |

...14.1 Analogue and Digital signals – Student Work Book.
1). (a) Explain what is meant by the Binary number system.
…………………………………………………………………………………………………
…………………………………………………………………………………………………
(b) Explain why the binary number system is very important for digital electronic systems.
…………………………………………………………………………………………………
…………………………………………………………………………………………………
2). The table below contains both decimal and binary numbers.
Complete the table by giving the equivalent binary or decimal number.
The first row is completed for you as an example.
Decimal Number
Binary Number
(a)
8
01000
(b)
4
(c)
10100
(d)
00110
(e)
15
(f)
28
(g)
11001
(h)
19
For more examples go to www.ikes.freeserve.co.uk/homework/hwk.htm
3). (a) On the axes below, draw an example of an analogue signal.
(b) State two examples of sources of analogue signals.
…………………………………………………………………………………………………
…………………………………………………………………………………………………
4). (a) On the axes below, draw an example of a digital signal.
(b) State two examples of sources of digital signals.
…………………………………………………………………………………………………
…………………………………………………………………………………………………
5). (a) Show, by calculation, that if the tape speed of a C90 Compact Cassette was 47.6 mms-1 then there would be approximately 130m of tape in the cassette.
…………………………………………………………………………………………………
…………………………………………………………………………………………………
(b) When all of the tape is spooled...

...Motion, Newton’s First Law of Motion, which states that an object will remain at rest or keep moving at constant velocity unless it is acted by an external force, keeps the idea that the momentum of an object remains the same unless the object experience an external force, because an object travelling at constant velocity will have constant momentum. Meanwhile, Newton’s Second Law of Motion links the idea of the net force acting on an object and its momentum. It implies that the net force acting on an object is directly proportional to the rate of change of the linear momentum of that object. The net force and the change in momentum are in the same direction. It can also be said that the net force is equal to the rate of change in momentum.2
In a collision, an object experiences a force for a given amount of time that results in its mass undergoing a change in velocity. The product of the force and time is called an impulse.
If an object puts an impulse on another object, the momentum of both objects will change. Therefore, it can be concluded that impulse is equal to change in momentum and the equation can be written as
Automobiles consist of several objects, including the vehicle itself, the passengers inside and any other loose objects in the vehicle. Unless the objects inside the car are restrained, they will continue moving at whatever speed the car is travelling, even if the car is stopped by a crash. So when a car stops suddenly due to a...

...
Free Fall
Rachel Shea
Physics 131 Lab, QL
Hasbrouck 210
Sept. 21, 2014
Abstract
This experiment measures the study of motion by observing the force of gravity acting solely upon an object, and also measures reaction time. If an object is in free fall, the only force acting upon it is gravity. The object used in this experiment was a golf ball that provided some acceleration when dropped. A sensor positioned underneath a table recorded the golf ball’s pattern of motion, when dropped. The main objective of performing this experiment is to measure the velocity and position of the ball to eventually find the acceleration of free fall. A computer program called, DataStudio, was used to create a graph of position vs. time and a graph of velocity vs. time. The second part of the experiment involved randomly dropping a ruler and having your partner catch it to determine reaction time.
Questions
1. The parabolic curves open upward instead of downward because of the golf balls movement over time: where it is dropped from, to where it ends up. The ball begins close to the sensor, then drops to the ground, then bounces back up closer to sensor again, therefore the bounces correspond with the bottom curves of the parabola. If the data were collected from the floor then the curve would open downward. But because the sensor graphs the position from the sensor, the curve was upwards.
2.
-4572009207500
The slope of the velocity versus time graph...

...
Research Question:
How does the length of a paper clip pendulum affect its period of oscillation?
BACKGROUND INFORMATION:
The simple pendulum:
A pendulum is an example of a vibration with a regular, consistent motion. A simple pendulum is one which can be considered to be a point mass suspended from a string or rod of negligible mass. It is a resonant system with single resonant frequency. For small amplitues, the period of such a pendulum can be approximated by:
Where, L – length of pendulum, T – time period, and g – local accelaration due to gravity.
Below is a diagram of a simple pendulum:
The period of a simple gravity pendulum depends on its length, the local strength of gravity and on the amplitude (the maximum angle that the pendulum swings away from vertical, θ0).
HYPOTHESIS:
I hypothesize that as the number of chains in the clip increases, the time period of an oscillation also increases and vice versa.
The period of oscillation of a pendulum represents the time taken to complete one oscillation. When the length of the pendulum, or in this case of experiment, the number of paper clips increase in the paper clip chain, the time period for one oscillation also increases, given the angle of swing is kept constant. This is because more the length, more will be the distance required to travel, and thus, the time period of one oscillation increases.
Moreover, the equation tells us that...

...Name . . MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A freight car moves along a frictionless level railroad track at constant speed. The car is open on 1)top. A large load of coal is suddenly dumped into the car. What happens to the velocity of the car It remains the same. It increases. It decreases. cannot be determined from the information given 2) Tightrope walkers walk with a long flexible rod in order to2) A) lower their center of mass. B) move faster along the rope. C) allow both hands to hold onto something. D) increase their total weight. 3) Which of the following is a false statement 3) The center of mass of an object must lie within the object. The center of gravity of an object may be thought of as the balance point. For a uniform symmetric object, the center of mass is at the center of symmetry. For an object on the surface of the Earth, the center of gravity and the center of mass are the same point. 4) In a game of pool, the white cue ball hits the 9 ball and is deflected at a 35 angle to the original 4)line of motion. What is the angle of deflection below the original line of motion for the 9 ball A) 90 B)75 C)35 D) 55 5) In a game of pool, the white cue ball hits the 5 ball and stops, while the 5 ball moves away with 5)the same velocity as the cue ball had originally. The type of collision is elastic. completely inelastic. inelastic. any of the above,...

...explore shooting problems, provides a theoretical basis for the shooting rate.
Keywords: shooting, shot angle, Hit rate
"The shooting is the general term of the offensive players the ball toward the basket and used a variety of specialized action [1]. Shooting basketball offensive skills, Surgery, is the only score means. Use a variety of other offensive technology, with the ultimate aim of the machine in order to create the shot are in the game, the offensive team, Will, so shooting is a the basketball confrontation of focus. At present, the domestic and international factors affect the basketball shooting, mainly for heart, Management and technical action, and take full advantage of the principles of mechanics to study less. From the physics point of view, using principles of mechanics and impact analysis, The Hit Rate factors, in order to explore an effective way to improve the shooting, in order to improve the rational knowledge of the athletes on the shooting process, guidance basket, The ball movement training to improve shooting.
1 Shoot the process of ball control and the need to address the problem
1.1 the ball control
Draws the process is a control of the ball procedure. In the shooting process, the control of one-dimensional (linear) movement is the easiest, as the movement dimension, The number increases, the control more difficult. The shooting process used four joints: shoulder, elbow, wrist and finger joints, regardless of which joint...

...generated containing details of the Candidate which is required to be printed by the candidate and taken to the nearest e-Post Office connectivity enabled Post Office for making payment. After payment, the candidate has to login to the system and upload the details written on the receipt by the Post Office. When the details are uploaded, the Confirmation Page will be generated.
Confirmation Report and Its filling up: The Confirmation Report can be generated after successful payment of Application Fee. The candidate has to click on the available link PRINT CONFIRMATION PAGE & TOP SHEET. Its generation means that the candidate has been successfully REGISTERED. It contains TWO PAGES and the two pages should be printed on separate A4 size papers.
(i) Confirmation Page
(ii) Top Sheet with the requisite enclosures.
On the Confirmation Page the candidate should paste two recent colored Passports sized Photographs. One of the photographs needs to be self-attested after pasting. Then the candidate has to put his/her Left Thumb Impression (LTI) and Signature in the respective boxes. The box for signature of the Father / Mother / Guardian (in case both parents are absent /unavailable) must also be duly filled up by either Father / Mother of the candidate or the Guardian, as the case may be.
In the second page the candidate has to put his/her own signature only. Then the candidate needs to self-attest all the photocopies of the required documents / testimonials...