Question

7. A body is coming down an inclined plane
with an acceleration of 1 m/s2. If it starts
from rest, find the time after which its velocity
becomes 5 m/s
(Ans. 5 s)​

Answer 1

Explanation:

acceleration (a)=1m/s^2

initial velocity (u)=0 ( as it starts from rest)

Final velocity (v)=5m/s

As,

v=u+at

5=0+1×t

5-0=1×t

5-0 = t

1

5=t

Therefore,time is 5sec

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Answer 2

$\underline{\bold{Answer:-}}$

$\underline{\boxed{t= 5 sec}}$

$\underline{\bold{Explanation:-}}$

Given:

intial velocity (u) = 0

acceleration (a) = 1 m/s²

Final velocity (v) = 5 m/s

time (t) = ??

From the 1st equation of motion

$\boxed{v = u+at}$

5 = 0 + 1(t)

5 = 1(t)

$\boxed{t= 5 sec}$