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ICSE Class 9 Answered

1. How to find the slope in displacement time graph? (Any good example for explanation of calculating the slope)
Asked by Vedansh | 02 Mar, 2016, 11:50: PM
answered-by-expert Expert Answer
The displacement-time graph is shown below:
 
 
Now, the slope will be
 
begin mathsize 12px style straight B identical to left parenthesis 4 comma 40 right parenthesis space and space straight A identical to left parenthesis 2 comma 20 right parenthesis Therefore comma space slope equals fraction numerator straight y subscript 2 minus straight y subscript 1 over denominator straight x subscript 2 minus straight x subscript 1 end fraction equals fraction numerator 40 minus 20 over denominator 4 minus 2 end fraction equals 20 over 2 equals 10 Now comma space the space slope space of space the space displacement minus time space graph space gives space the space velocity. So comma space velocity space is space 10 space straight m divided by straight s. end style
Answered by Romal Bhansali | 03 Mar, 2016, 11:00: AM

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ICSE 9 - Physics
a car travels 100km at a speed of 60km/h and returns at a speed of 40km/h calulate the average speed for the whole journey
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plz solve urgently dear experts :
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Asked by abhaymukherjee789 | 28 May, 2022, 11:06: AM
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