. Write one example for each of the following type of motion. (i) Rectilinear (ii) Circular (iii) Periodic (iv) Circular and periodic 2. Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it. (i) Sameer measured it with a half metre long thread. (ii) Gurmeet measured it with a 15 cm scale from her geometry box (iii) Geeta measured it using her hand span. (iv) Salim measured it using a 5 m long measuring tape. Which one of them would get the most accurate length? Give reason for your answer. 3. Three students measured the length of a corridor and reported their measurements. The values of their measurements were different. What could be the reason for difference in their measurements? (Mention any three) 4. Ajit was riding in his bicycle along a straight road. He classified the motion of various parts of the bicycle as (i) rectilinear motion, (ii) circular motion and (iii) both rectilinear as well as circular motion. Can you list one part of the bicycle for each type of motion? Support your answer with reason. 5. Fill in the blanks (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 certain interval of time is in ........... motion. (iii) In rectilinear motion, object moves.a............ line. (iv) SI unit of length is ............ 6. Correct the following. (i) The motion of a swing is an example of rectilinear motion. (ii) 1m = 1000 cm 7. What does your P.T. teacher use to measure the length of the playground? Also, write the unit teacher use to measure the length of the playground. 8. Why a cubit cannot be used as the standard unit of length? 9. Can you measure the length of a pencil with metre-scale? Give reasons to support your answer.
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Answer: No idea. But I'll help, once I get to know okay? Just wait for some time.
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