ICSE Class 9 Answered
A ball is thrown up vertically and returns back to thrower in 6s . Assuming there is no air friction, from the graph calculate
1.deceleration
2. Acceleration
Asked by aeishnaparihar4259.9sdatl | 06 May, 2020, 11:46: AM
The velocity time graph for the first 6 seconds is given below:
(i) Deceleration is given as the slope of the graph for the first 3 seconds.
(ii) Acceleration is given as the slope of the graph for the last 3 seconds.
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/Graph_of_v_vs_t.jpg)
![begin mathsize 14px style deceleration comma space straight a equals slope equals fraction numerator 0 minus 30 over denominator 3 minus 0 end fraction equals fraction numerator negative 30 over denominator 3 end fraction equals negative 10 space straight m divided by straight s squared end style](https://images.topperlearning.com/topper/tinymce/cache/6055a90f9915203c60b8a0d04ef9aa2f.png)
![begin mathsize 14px style Acceleration space straight a equals slope equals fraction numerator 30 minus 0 over denominator 6 minus 3 end fraction equals 30 over 3 equals 10 space straight m divided by straight s squared end style](https://images.topperlearning.com/topper/tinymce/cache/04d8d1b208b5942497492c0b84919128.png)
Answered by Shiwani Sawant | 06 May, 2020, 14:34: PM
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