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Figure shows the displacement time graph of a body.what is the ratio of the speed in the first second and that in the next two seconds . answer 2:1 ana chahiye |
| Answer» RECT answer for this question is 2:1 .Explanation :We know that if we are given with the graph of displacement vs time for a moving body , then the slope of this CURVE at any point will give the speed of the body at that time .So , in this case for time period 0-1 sec , the slope or the speed in this time period is : = = = 30 m/sAnd for the time period 1-3 sec i.e. for the NEXT two sec we have the slope or the speed for this time period is : = = = 15 m/s Now the ratio of the speeds in the 1ST 2nd to that in the next two seconds is : = =2 Hence , the ratio is 2:1 | |