a trolley while going down and inclined plane has an acceleration of 2 cm S -2 what will be its velocity 3 seconds after the start
this question is from chapter motion in 9th class CBSE you can also referred guide but please tell me the exact answer don't do spam
Answers
Answered by
3
6cm/s-2 is the answer for the above question...........
7355850601:
wrong
not-2
-1
can you tell me why
in acceleeation
ms-2
in velocityms-1
cms-1 in velocity
that's what I said but in question is given like that
Your question is fine. The mistake is in this answer.
Answered by
6
You are given the acceleration while going down the inclined plane. Simply use the formula of velocity to fins it.
At start, u = 0
a = 2 cm/s^2
t = 3 s
v = u + at
v = 0 + 2×3
v = 6 cm/s
Velocity of trolley after 3s will be 6 cm/s.
is there any need to change centimetres into metres for the acceleration
in the problem
There is no need as such. But if you want to report it in m/s, you can do it.
Then the answer will be 0.06 m/s.
But it hasn't asked specifically to find velocity in m/s. So it's okay.
If your teacher is very strict and expects answers in standard form(i.e. SI units) , you better convert it into m/s ;)
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