pls give me the answer of these questions
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the answer of 2 is after 2 sec
4- a=-19.6
v=0
t=5sec
v=u+at
0=u-19.6×5. (acceleration will in minus as it is moving upward )
u=98m/S
now,
v^2=u^2+2as
o=(98)^2- 2×19.6×5. (acceleration in negative)
0=9604 - 39.2 s
39.2s =9604
s= 9604/39.2
s=245m
here is ur answer!!
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