Physics Past Paper PDF

or a 15 - --mlst 5 or a=-3rrrls2 Thus' the acceleration of car is, - 3 m/s2 (minus 3 m/s2). The negative sign of acceieration means that it is retardation. So, we can also say that the car has a retardation of +3 m/sz. we will solve many more problems on acceleration after a while. Before we go furt...

or a 15 - --mlst 5 or a=-3rrrls2 Thus' the acceleration of car is, - 3 m/s2 (minus 3 m/s2). The negative sign of acceieration means that it is retardation. So, we can also say that the car has a retardation of +3 m/sz. we will solve many more problems on acceleration after a while. Before we go further and derive the equations of uniformly accelerated motion, please answer the following questions and problems. Very Short Answer Type euestions 1. Is displacement a scalar quantitl-? Nc. ff iS c\ vt i\C i lvcrrrtit5 2. State whether distance is a scalar or a vector quantitl-. 3. Change the speed of 6 m/s into km/h. 1_y _i. )_ 4. What name is given to the speed in a specifiiddirecti'on? ::= 5' 6' 7.. L Give two examples of bodies havi,g no1.un-iform motion. ,i ,-.1c...rr.p cr I>crtr L..,n ihe ,o. [. ul, Name the physical quantity obtained b1. dividing 'Distance travelled' by 'f in-re take., to travel that sr!)Lqr1\ distance. ,.., What do the following rleasure in a car? r,,il,, r Speedometer (b) Odometer 8' Name the physical quantity which gives us an idea of how slow or fast a body 9' under what conditions can a body travel a certain distance and yet its resultantis moving. displaceme,t be zero? l0' In addition to speed, lvhat else should rr.e knorv to predict the position of ir mo'i'g body? ll. When is a body said to have unifirrnr velocity? 12' under n'hich corrdition is the magnitucle clf average r.elocity eclual to average speecl? 13' which of the tw