A ball is rolled up a slanted plank at 18m/sec and the speed decreases every second by 3m/sec.When the speed becomes,it will start rolling downwards with speed increasing athe the same rate.
At which time does the speed becomes 0?If the speed is to be obtained as a non negative number at all times,
a)What is the algebraic equation connecting speed and time till 6 sec?
b)For the journey after 6 sec,what is the algebraic equation connecting speed and times?
c)If the speed downwards is taken as a negative number,what is the speed time equation which holds for all time?
Answers
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v-0
a- -3
u-18
v=u+at
t=0-18/-3
t=6 s
a)v=18-3t
b)v=18+3t
c)18-3t=v
Reshma2229:
A small mistake in my question......2 sentence....When the speed becomes 0,
I forgot to write 0
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