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CBSE Class 9 Answered

On a 120 km track, a train travels the first 30 km at a uniform speed of 300 km/h. Calculate the speed with which the train should move rest of the track so as to get the average speed of 60 km/h for the entire trip?
Asked by Saloni Bansal | 17 Jul, 2013, 12:35: AM
answered-by-expert Expert Answer
Answered by | 17 Jul, 2013, 10:42: PM

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CBSE 9 - Physics
The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify.
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:50: PM
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CBSE 9 - Physics
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CBSE 9 - Physics
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CBSE 9 - Physics
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CBSE 9 - Physics
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Asked by durgesh21332 | 06 Sep, 2023, 06:17: PM
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CBSE 9 - Physics
A body moving with uniform acceleration  travels 84m in 6seconds and 264m in 11seconds.  Find acceleration and initial velocity? (In detail)
Asked by sagrawal0081 | 18 Aug, 2023, 05:04: PM
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CBSE 9 - Physics
question 1) A body is projected vertically upwards from top of the tower with the velocity of 30m/s. if it takes 8sec to reach on ground then what is the height of the tower (g=10ms). what is the total distance travelled by the body. question 2) A body is dropped from the height of h covers by 64% distance in its last second.find out thte total tim of the ball and height. question 3) A body projected vertically upward, At the half  of its maximum height its velocity becomes 20m/s, what is the maximum height attained by the body. question 5) A body is projected vertically upward from ground. the time of flight is 8 sec find the velocity of projection.
Asked by ketkiparasgandhi | 05 Jul, 2023, 08:02: PM
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CBSE 9 - Physics
define motion provide example of an object in motion  
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Asked by leena3732 | 15 Jun, 2023, 09:42: AM
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