What does the slope of velocity – time graph give? (a) Distance (c) Acceleration (b) displacement (d) Change in velocity.
[1]
2.
The displacement of the body can be(a) Positive (c) Zero (b) negative (d) All of these.
[1]
3.
Which of the following gives both direction and magnitude(a) scalar (c) Both (b) vector (d) None.
[1]
4.
If a moving body comes to rest, then its acceleration is(a) Positive (c) Zero (b) negative (d) All of these depending upon initial velocity.
[1]
5.
A body is moving with a velocity of 12m/s and it comes to rest in 18m, what was the acceleration?
[2]
6.
A body starts from rest and moves with a uniform acceleration of 4m/s2 until it travels a distance of 800m, find the find velocity?
[2]
7.
The driver of a car traveling along a straight road with a speed of 72KM ph observes a signboard which give the speed limit to be 54KM ph. The signboard is 70m ahead when the driver applies the brakes0 calculate the acceleration of the car which will cause the car to pass the signboard at the stated speed limit?
[2]
8. 9.
Differentiate between scalars and vectors? The displacement x of a particle in meters along the x axis with time ‘t’ in seconds according to the equationX= 20m +( 12m )t s
[2] [3]
(a) draw a graph if x versus t for t = 0 and t =5 sec
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(b) What is the displacement come out of the particles initially? (c) What is slope of the graph obtained? 10. The velocity of a body in motion is recorded every second as shown[3]
calculate the – (a) Acceleration (b) distance travelled and draw the graph. 11. Draw the graph for uniform retardation – (a) position – time graph (b) velocity – time (c) Acceleration time 12. The displacement – time graph for a body is given. State...
...accident such as car crash, since the momentum changes instantly, the force becomes extremely great. Impulsive force is produced during the collision and it will cause severe damage to the car, and may also injure the passengers in it. 3 The passengers’ momentum can be stopped by objects in the car such as dashboard, side door, or windshield, however, it will cause serious injuries because the force would be very great. To increase the safety of the driver and the passengers, safety devices such as seatbelts, air bags, crumple zones, and etc. are introduced. Safety devices such as seatbelts, air bags, crumple zones and etc are designed to reduce the forces on the body if there is a collision. These safety devices are mostly made based on the physics principle of force and momentum, which is
This relationship says that if momentum is transferred over a longer period of time, the force involved is less. If the force of a collision can be reduced, then the chances that someone would get hurt in an accident are lower.4 Since momentum cannot be transformed to another form of energy, it is always conserved during any collision. The change in momentum is then a fixed quantity, and to lower the force, changes have to be made in the time of the collision.5 The time required for the car to stop in a collision have to be increased so that the forces that will impact the occupant will be lower, and they will be less likely to be hurt. If the time taken for the change...
...
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 physically...
...for 1s from 1.6m to 0.2m
it remained at rest for 2s at 0.2m
it moved in the positive direction with a constant speed for 3s’
DISCUSSIONS
I found out that the main of this experiment which is from the experiment I can say that the slope of the distance vs time graph is the velocity of the object the experiment graphs show certain properties which tells whether the object is moving in the negative direction or whether it is moving in the positive direction , if the object is at rest or if it is in motion. If the slope of the graph is increasing it means the object is moving away for the motion detector and if it is decreasing the person is moving towards the motion detector and if the slope is 0 the person is at rest
REFERENCE
Physic for engineers and scientistserway and jewatt
...
...physics
5/23/13
Constant motion
Fill in the Blank
(constant velocity)
1)Neither( ) nor ( ) of motion changes
2)y7ui8z
Vocabulary Matching
3)
A)how fast something moves; an expression of how much time it takes for a change in position to occur; rate of motion; rate of change of position( )
B)The speed of an object in a particular direction; ratio of change in position to time interval over which change takes place.( )
C)quantity having both magnitude and direction( )
D)the separation of two points; the actual distance traveled; a scalar quantity( )
E)speed that does not change( )
F)rate of motion varies( )
G)velocity that does not change over time( )
Velocity,constant speed,average speed,distance,vector quantity,speed,constant velocity
Concept questions
4)
5)
Problem
6)A baseball pitcher throws a 30 m/s fastball toward the batter, 20 meters away. The batter hits a line drive right over the pitcher's head into center field. The fielder stops the ball 2 seconds after it is hit, 80 meters from home plate. He hesistates for 2 seconds and then throws the ball at 18 m/s to the second baseman, who catches the ball 2.2 seconds later.
a) How long does it take for the ball to travel to home plate?
b) Find the ball's average velocity on its trip from the batter to the outfielder.
c) Find the distance from outfielder to second base.
7)Two cars are moving at constant...
...FORM 4 
Chapter 1 
INTRODUCTION TO PHYSICS 

FARHAH FADZLI 
[Pick the date] 
[Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] 
Derived quantities
(speed is derived from dividing distance by time)
Derived unit
Combination of base units trough multiplying and/or dividing them
Example 1: Find the derived unit of Density
Answer:
Unit Conversion
Area & Volume
Conversion of prefixes
Prefixes to normal number
Example 1
The frequency of the radio wave is 350M Hz. What is the frequency of the radio wave in Hz?
Answer :
Mega (M) = 1,000,000 or 106
Therefore, 350MHz = 250 x 106Hz
Example 2
The thickness of a film is 25nm. What is the thickness in unit meter?
Answer:
nano (n) = 0.000000001 or 109
Therefore, 25nm = 25 x 109 nm
Normal Number to prefixes
Example 3
0.255 s is equal to how many ms?
Answer:
mili (m) = 0.001 or 103
To write a normal number with prefixes, we divide the number with the value of the prefixes
0.0255 s = 0.0255 ÷ 103 = 25.5 ms
Example 4
Convert 265,500,000 W into GW.
Answer:
Giga (G) = 1,000,000,000 or 109
Therefore,
265,500,000 W = 265,500,000 ÷ 109 = 0.2655GW
Scientific notation
1.Scientific notation (also known as Standard index...
...PHYSICS PROJECT
By: Pranav Jain
Class: S6D
ACKNOWLEDGEMENT
TO WHOM SO EVER IT MAY CONCERN
I convey my sincere gratitude to Mrs. Bindu Kapoor for her continuous guidance and help. Without her kind support, the completion of this Practical File would not have been possible.

Name Pranav Jain
Class S6D, Roll No. 22
CERTIFICATE
TO WHOM SO EVER IT MAY CONCERN
This is to certify that this Practical File has been designed and developed by Pranav Jain under my guidance and supervision.

_____________________
_____________________
What is Projectile Motion?
Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown obliquely near the earth's surface, and it moves along a curved path under the action of gravity only.The path followed by a projectile motion is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning of the trajectory, after which there is no force in operation apart from gravity.
A projectile is any object that is cast, fired, flung, heaved, hurled, pitched, tossed, or thrown. (This is an informal definition.)
Some examples of projectiles
Any soldier who has to bomb a particular place using an airplane or a tank must calculate the...
...Kinematics is the branch of classical mechanics that describes the motion of bodies and systems without consideration of the forces that cause the motion. There are four activities done in this experiment, graphical analysis of human motion, where displacement vs. time and velocity vs. time were graphed. Graphical analysis of motion where in the 10th seconds the total displacement is 14.69m, average velocity is 1.47 m/s. Reaction time where one of the normal reaction time among the group is 0.4s and the reaction time while someone is distracting the member is 0.5s, and lastly graph matching.
1. Introduction
All of us have the ability to move. Knowing how to describe motion is an important first step in understanding the underlying physics that governs changes in motion. We see changes in motion all the time, as we go to work or school, participate in sports or even wander around our homes. If we never changed our own motion, we would never make it out of bed in the morning. The study of motion and of physical concepts such as force and mass is called Dynamics. Kinematics is one of the topics under dynamics. Kinematics describes motion without regard to its causes. In this experiment, kinematics focuses in one dimension: a motion along a straight line. This kind of motion, involves velocity, displacement, and acceleration with regards to time. The objectives of the experiment are to draw the displacement versus time graphs and velocity versus time graphs...