Question

A bullet blasts from the barrel of a gun upward in the vertical direction with an initial speed of 700 m/s. Find the maximum altitude reached by this bullet and the time needed to reach it

Answer 1

HEY MATE HERE IS YOUR ANSWER


v= Vi - 9.81 t

at top v=0

So,

t= 700/9.81=71.4 sec

Now there are two ways to proceed one way:

h=Vit-4.9^2

h=700(71.4)-4.9(71.4)^2

h= 25000m

ANOTHER way

Average speed up = (700+0)/2=350m/s

h=350*71.4= 25000m

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Answer 2

hello friend your answer .......
v=vi-9.81t
top v=0
then,
t=700/9.81=71.4seconds
h=vit-4.9²
h=700(71.4)-4.9(71.4)
h=25000m