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SUMMARISED FROM class @ (CINFE IE TR T )) Class 9 notes 2026-27 TeQ Hanuel Ve = Distance. ae acement 0) >. jt is the total Jt is. the shortest ica a 4 ; distance covered. path covered from | | u from initial te initial to final : Q . t 5 3 final point. § point. Tt is sealan | Te is vector’ quantity. a quantity | ST -unit — metre (m) : ‘| travelled and- the -magpitade of sdeaplecabut } he tae equad 4 object meves im one direction. BIAS ESTATE TDI TE SDA Sig DE AVERAGE. \PEED 7 a aw enage Speed of aM. object is the totol distance travelled divided by the time intewal during whith this distance is covered, a = Wg. speed = TOTAL DISTANCE TOTAL TIME Tt has only numerical value a RATE OF CHANGE © The rate of ce in any quantity is U Y defined. as the rate s coviesponding change with respect te time. + VELOCITY + 7 Velocity. is the i. of change in an object positon. Te iA a. Verte. beth magnitude and direction, g sf wantity as tt has + AC “ELE RATIO NS Acceleration is the nate of sue in p fh Vv CLOT, . G it Ste is ale. a Vector. quantity as it ’ v has beth magnitude and direction pe ~++ PLANE + Motion im a plane - Two dimensions. ~ * UNIFORM CIRCULAR = motion OHO —> When an object moves in a cuncular path its méotieon 4 called LMA ZOU tt ii ii ia tA atime allt aan ane arcutar motion. ae i 7 / oo te | \ i i Ne A i oo i tt i tangent to te So The vile at a point 41s along the fo) es oO tangent to the circle at that pout im the || ‘ RY 1 direction of motion. i | Gee eA straight line that meets the circbe | i il See at one and only pemt called a circle . NON - UNIFORM 0 i — Lf the object travels unequcl distances im equal intervals of time, then tt is © am Unt for me motion. u Lo Total PME Ts = Displacement Total Velocuty = Displacement Fume Speed = Distance a leratien a -'s Second Law : PS ea, 3. Momentum (p) = mv 10. Impulse (J) = FAt = J = Ap = mv- mu 44.- Werk (Ww) = cosé oes 12. Power (P).= 7 f 13, mv> 14. mgh Time 3. Instantaneous Velocity eerie Ato : Page No. : | Date « i (Watt } Pe ) (TJeute ) m= mass (k ; im = acceleration 9.8 m/ h= height (m) time perted, W = angular velocity 4 d 
