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C6, Motion and Measurement of distances worksheet., I. Match the events related to motion in Column I with the types of motions, given in Column, , II. Choose the correct answers:, 1. A man moves on a straight road from point A to point C. he takes 20, minutes to cover a certain distance AB and 30 minutes to cover the rest of, the distance BC. The man then turns back and takes 30 minutes to cover the, distance CB and 20 minutes to cover the rest of the distance to his starting, point. Man makes 10 rounds on the road the same way. The motion of the, man is, (a) only rectilinear motion., (b) only periodic motion., (c) rectilinear and periodic both., (d) neither rectilinear nor periodic, 2. Four children A, B, C, and D measure the length of a table which was, about 1 m. Each of them used different ways to measure it., (i) A measured it using a 2 m long measuring tape., (ii) B measured it with a 10 cm scale from her geometry box., (iii)C measured it using her hand span., (iv) D measured it with a 0.5 meter long thread., Which one of them would get the most accurate length? Give a reason for, your answer., 3. Which of the following does not express a time interval?, (a) A day, (b) A second, (c) A school period, (d) Time of the first bell in the school
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4. X and Y start from point A. X starts running through AB and reaches point B., Y also starts running through path ABC and reaches B at the same time as A., The situation is depicted in the below figure, Which of the following is/are true for the given situation., (a) Y covers a longer distance but with a lower speed., (b) X covers a shorter distance with a higher speed, (c) X covers a shorter distance with a lower speed., (d) Y covers a longer distance with a higher speed., 6. You are provided three scales A, B, and C as shown in the below figure to, measure a length of 10 cm., , For the correct measurement of the length, you will use the scale, (a) A only, (b) B only., (c) C only., (d) Any of the three scales., III. Arrange the following lengths in their increasing magnitude:, 2 metre, 2400 centimetre,10000 millimetre, 2 km, , IV. Fill in the blanks
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(i) Motion of an object or a part of it around a fixed point is known as, _________ motion., (ii) A body repeating its motion after a certain interval of time is in ________, motion., (iii) The ball is rolling on the ground is having both ________ and ___________, motion, (iv) SI unit of length is _______________, (v) The comparison of an unknown quantity with the known quantity is called, __________, V. Answer the following questions:, 1. Sam is traveling on a train. He observes that the trees near the track, appear to be moving whereas co-passengers appear to be stationary. He is, curious to know the reason. Help him out, 2. How are the motions of a wheel of a moving bicycle and a mark on the, blade of a moving electric fan different? Explain.
