In this section major contents of Kinematics(mechanics) i.e. displacement, velocity and
acceleration have been discussed in detail. Further to make the preparation more effective and
worthwhile each topic is synchronized with past paper questions and their solutions. This chapter
is very much fruitful for the students of IGCSE, GCSE, O/LEVEL, A LEVEL, IB Physics
appearing in CIE or Edexcel examination system.
Dr. Zubair Ph.D.
Associate professor of Physics
1
, 2 Table of Contents
3 KINEMATICS (Displacement, velocity and acceleration)................................................................... 4
3.1 DISPLACEMENT ........................................................................................................................ 4
3.2 VELOCITY................................................................................................................................... 4
3.2.1 Uniform velocity ................................................................................................................... 4
3.2.2 Displacement-Time Graph .................................................................................................... 4
3.3 ACCELERATION ........................................................................................................................ 5
3.3.1 UNIFORM ACCELERATION............................................................................................. 7
3.4 EQUATION OF MOTIONS OF UNIFORMLY ACCELERATED MOTION ........................... 7
3.4.1 First Equation of Motion by Algebraic Method .................................................................... 7
3.4.2 First Equation of Motion by Graphical (Velocity -time) Method ......................................... 7
3.4.3 Second Equation of Motion by Algebraic Method ............................................................... 8
3.4.4 Second Equation of Motion by Graphical (Velocity -time) Method .................................... 9
3.4.5 Third Equation of Motion by Algebraic Method .................................................................. 9
3.4.6 Third Equation of Motion by Graphical (Velocity -time) Method ..................................... 10
3.5 MOTION UNDER GRAVITY ................................................................................................... 11
3.5.1 Past paper questions exploring free fall motion under gravity............................................ 12
3.6 VELOCITY -TIME/ SPEED-TIME GRAPH AND ACCELERATION ................................... 15
3.6.1 Past paper questions exploring displacement, velocity and acceleration – time graphs ..... 17
3.7 MOTION OF A BOUNCING BALL ......................................................................................... 22
3.7.1 Variation of velocity of a bouncing ball with time ............................................................. 23