# Speed Velocity and acceleration

Sir ir it true or false – “the speed of particle remains constant.this means that no unbalanced force acts on it.” (Purshkar  asks) Answer: If velocity remains constant, then we can say that no unbalanced force acts on it. If a body moves with uniform speed with its direction changing with time, as in the case [...]

# Physics Portions for SA1 Class IX CBSE

Motion, force and work Motion : Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, equations of motion by...

# Physics Revision Help for Half Yearly Exam Class XI CBSE & KVS

3 and 5 Marks Questions It is very much essential to completely solve all the exercises (including the additional exercises) given in NCERT text book. What are errors? Describe the propagation of errors in addition subtraction multiplication and division. What do you mean by the principle of homogenity of dimensions? Describe the applications of dimensional … Continue reading Physics Revision Help for Half Yearly Exam Class XI CBSE & KVS