Lhas the amension of distance by
ut change of distance
thus the SI unit of speed is mature per second
(b) m/s.
35. A car covers a distance of 100 km in 1 hour 20 minutes. Find its speed in (a) km/h and
Tooneco 1001601.30 h
...10.0.160. Slu. Kauh.
Answers
Answer:
We know that,
(i) The basic unit of time is second, second is the SI unit of time.
(ii) Every object may or may not moves with a constant speed. Some are accelerating also.
(iii) The Distance between two cities are measured in kilometers. it is big unit of distance.
(iv) The time period of a given pendulum is always constant because it depends on the length of the pendulum.
(v) The speed of a train is measured in km/h and in m/s.
So, we can say that, (ii), (iv) and (v) are not correct statements.
Hence, This is the correct answer.
Explanation:
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11th
Physics
Motion in a Straight Line
Speed and Velocity
Which of the following are ...
PHYSICS
Which of the following are not correct?
(i) The basic unit of time is second.
(ii) Every object moves with a constant speed.
(iii) Distances between two cities are measured in kilometers.
(iv) The time period of a given pendulum is not constant.
(v) The speed of a train is expressed in m/h.
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ANSWER
We know that,
(i) The basic unit of time is second, second is the SI unit of time.
(ii) Every object may or may not moves with a constant speed. Some are accelerating also.
(iii) The Distance between two cities are measured in kilometers. it is big unit of distance.
(iv) The time period of a given pendulum is always constant because it depends on the length of the pendulum.
(v) The speed of a train is measured in km/h and in m/s.
So, we can say that, (ii), (iv) and (v) are not correct statements.
Hence, This is the correct answer.