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ksaimouli
the graph below shows the height h(t) of a bird soaring in the sky after t seconds of observation
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where 2nd derivative +,- or 0 at .8,2,3,4,5.2,6,7
@hartnn how to identify the 2nd derivative graph from function graph
2nd derivative mean u have to find velocity on time 2 ,3,4,5,6,7,8 whether it i positive or negative or zero ok now take out ur pencil see the graph at poition 2 put ur pencile in the shape of curve u will fine u move ur pencil clockwise means it is +ve
2nd mean not velocity it means acceleration girl
derivative is velocity
ok no prob u have to do this same way but thiking logically by comparing it with velocity like in position in time 2 sec u fine velocity in +Ve mean velocity is incereasing and if velocity is increasing then acc muts be +Ve
u see till 5sec velocity is increaing means till 5ec acceleration is +Ve but on 5 velocity is constant mean acceleration is zero and then from 6 veolcity is drceasing mean der must be deacceleration so accleration must be -ve
taking the critical points