Question

plz solve this question​

Answer 1

Answer:

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Answer 2

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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