Motion that reports its after som period of time is called periode moto.
Give two examples each, of modes of transport used on land. water and air.
point remains the same
1)
Exercises
3
1
Fill in the blanks:
m) One metre is 110
(11) Five kilometre is
(LI) Motion of a child on a swing is
(iv) Motion of the needle of a sewing machine is
(v) Motion of wheel of a bicycle is
things like
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3.
6.
Why can a pace or a footstep not be used as a standard unit of length?
Arrange the following lengths in their increasing magnitude:
1 metre, 1 centimetre, 1 kilometre,1 millimetre.
The height of a person is 1.65 m. Express it into cm and mm.
The distance between Radha's home and her school is 3250 m. Express this
distance into km.
7. While measuring the length of a knitting needle, the reading of the scale at one
end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle?
8.
Write the similarities and differences between the motion of a bicycle and a
ceiling fan that has been switched on.
Rotational
9.
Why could you not use an elastic measuring tape to measure distance? What
would be some of the problems you would meet in telling someone about a distance
you measured with an elastic tape?>
10. Give two examples of periodic motion.
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Answer:
Busses and wheel carts are two examples of transport modes used on land. Boats and ships are two examples of transport modes used on water. Aeroplanes and helicopters are two examples of transport modes used in air.
Explanation:
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