(KINEMATICS<br />Can an obiect at rest as well as in motion at the same time? Explain with<br />(2). State in the following cases, whether the motion is one two or three<br />Dimensional (a) a kite flying on a windy day (b) a speeding car on a long straight<br />highway (c) a carom coin rebounding from the side of the board (d) a planet<br />revolving around a star.<br />(3). For ordinary experiments which of the observers below are inertial and which are<br />non inertial? (a). a child revolving in a giant wheel. (b) a driver in a sports car<br />moving with constant high speed of 200 km/h on a straight road. (c) the pilot of an<br />aeroplane which is taking off. (d) a cyclist negotiating a sharp turn. (e) the guard of<br />a train which is slowing down to stop at a station.<br />(4). Can earth be regarded as a point object when it is describing its yearly journey<br />around the sun<br />(5). What do you understand by positive and negative time.<br />(6). A drunkard walking in a narrowlane takes 5 steps forward and 3 steps backward<br />each step of 1m long per second and so on. Determine how long does the drunkard<br />takes to fall in a pit 15m away from the start.<br />(7). Usually average speed means the ratio of total distance travelled to the total time<br />elapsed. However, sometimes the phrase' average speed' can mean the magnitude<br />of the average velocity. Are the two same? Discuss.<br />(8). Why is speed in general is greater than the magnitude of the velocity?<br />(9). Can a partide in one dimensional motion have zero speed and nonzero velocity?<br />10 Can a horiy have constant velocity but a varving speed?
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