Daily Practice Sheets

Chapter 5: Laws of Motion | Newton’s Laws

Newton’s Laws Newton’s First Law Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change the state by external force.   Inertia The first law of motion describes a property of matter : No body (dead or living) can change its velocity by […]

Chapter 5: Laws of Motion | Some Important Definitions

Some Important Definitions   Force Force is a push or pull which, produces or tries to produce motion in a body at rest. stops or tries to stop a moving body. changes or tries to change the direction of motion of body. produces a change in the shape of the body.   Classification of Forces […]

Class 11th Physics | Relative Velocity

Relative Velocity The position, velocity and acceleration of a particle depend on the reference frame chosen. A particle P is moving and is observed from two frames S and S¢. The frame S is stationary and the frame S¢ is in motion.   Let at any time position vector of the particle P with respect […]

Class 11th Physics | Uniform Circular Motion

Uniform Circular Motion As another small illustration of motion of a particle in two dimensions let’s analyse the uniform circular motion of a particle. In uniform circular motion the particle moves in a circular path with constant speed. Let’s choose the centre of the circular path as the origin of the reference frame. Point ‘P’ […]

Class 11th Physics | Some Special Cases of Projectile Motion

Some Special Cases of Projectile Motion Horizontal projection from the top of the tower Let a particle body be projected horizontally with an initial sped v0 from the top of a vertical tower of height H. In this case initial velocity is in horizontal direction and there is no vertical component. The acceleration due to […]

Class 11th Physics | Two Dimensional Motion | Projectile Motion

Two Dimensional Motion (Projectile motion)   Oblique projection from ground A particle when given a velocity at an arbitrary angle made with the horizontal surface is known as a projectile. If a particle is projected from point O, at an angle q from the horizontal, with initial velocity then the components of in x and […]

Class 11th Physics | Motion Due to Gravity

Motion Due to Gravity Acceleration due to gravity It is an interesting fact to note that, in the absence of air resistance all bodies irrespective of their sizes and shapes fall with the same acceleration, towards the centre of earth, when released through some height near the earth surface. For example a feather and a […]

Class 11th Physics | Graphical Representation of Motion

Graphical Representation of Various Types of Motion   Graphical Representation   When we represent motion graphically, there are two types of graph, namely (i) Displacement –Time Graph (ii) Velocity – Time Graph Note: These graphs will have validity only if motion under study is along a straight line. Then displacement, velocity and acceleration vectors are […]

Physics Theory | Kinematical Equations of a Particle Moving With Constant Acceleration

Kinematical Equations of a Particle Moving With Constant Acceleration   Since ,              where     ax =                     . . . (i) and    ay =                     . . . (ii) Þ     From (i)          Þ    v(t)x = vox + axt                 . . . (iii)     Here vo(x) is velocity at time, t = 0      vt(x) is the velocity at time, […]

Physics Theory | Basic Definitions in Kinematics

Basic Definitions in Kinematics   Position vector It describes the instantaneous position of a particle with respect to the chosen frame of reference. It is a vector joining the origin to the particle. If at any time, (x, y, z) be the cartesian coordinates of the particle then its position vector is given by . […]

%d bloggers like this: