Physics Past Paper PDF (2023-24)

Q uestions Table 7.1 1. An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example. 2. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20...

Q uestions Table 7.1 1. An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example. 2. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position? 3. Which of the following is true for displacement? (a) It cannot be zero. (b) Its magnitude is greater than the distance travelled by the object. 7.1.2 U NIFORM T ime 9:30 am 9:45 am 10:00 am 10:15 am 10:30 am 10:45 am 11:00 am Distance travelled by object A in m Distance travelled by object B in m 10 20 30 40 50 60 70 12 19 23 35 37 41 44 7.2 Measuring the Rate of Motion MOTION AND N O N - UNIFORM MOTION Consider an object moving along a straight line. Let it travel 5 m in the first second, 5 m more in the next second, 5 m in the third second and 5 m in the fourth second. In this case, the object covers 5 m in each second. As the object covers equal distances in equal intervals of time, it is said to be in uniform motion. The time interval in this motion should be small. In our day-to-day life, we come across motions where objects cover unequal distances in equal intervals of time, for example, when a car is moving on a crowded street or a person is jogging in a park. These are some instances of non-uniform motion. (a) Activity ______________ 7.5 The data regarding the motion of two different objects A and B are given in Table 7.1. Examine them carefully and state whether the motion of the objects is uniform or non-uniform. 74 (b) Fig. 7.2 SCIENCE Rationalised 2023-24