plz solve this question
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Answer:
u = 4 m/s
Explanation:
given:
h=80 cm = 0.8m
time taken (t)=6 sec
a= -g= 10 m/s^2
and let the initial velocity be 'u'
so as the body is being thrown upwards the kynamatic equations are changed due to some sign convention.
:. hear we can us the equation v^2 - u^2 =2 a s
but as it is thrown up it changes to :
u^2=2gh hear v= 0 because it stops after reaching max height u^2= 2* 10* 0.8
u^2=16
u= 4 m/s
Hope I answered your question
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