0:04
accelerates from rest at 8 m/s squ in
0:09
how much time will the body travel a
0:15
km in this case we look at a body which
0:20
uniformly accelerates from rest which
0:22
means that our initial
0:34
to0 at 8 m/ squ which means the
0:37
acceleration e is equal to
0:45
squ in how much time will the body
0:49
travel a distance of 2.5 km and distance
0:58
Kil I'm we convert kilom into meter we
1:06
M therefore in this case now we will use
1:10
the one of the equations of motion which
1:23
and U here is 0 therefore 0 * T isal to
1:27
0 therefore we are going to have Z here
1:32
plus a here is the acceleration which is
1:35
8 m/ squ therefore we say * 8 *
1:41
t² T is not given to us from the
1:44
equation as you can see it say this the
1:46
question said in how much time therefore
1:54
us we have to find T therefore now s
1:58
here as you can say is 2,500 M therefore
2:03
2500 instead of s by collecting like th
2:08
I'm making T subject of the formula now
2:12
that first of all let's say
2:17
to this half * 8 is = 4
2:23
t² then we divide both
2:26
sides by four to make this for
2:34
and we end up having this equals
2:38
to t² is = to 2500 / 4 will give us 600
2:47
25 now take a square root of both sides
2:52
this will cancel this leaving us with t
2:55
isal root of 625 will give us 25
3:00
and our final answer which is time is
3:03
supposed to be in seconds and this is
3:06
the final answer therefore we have 25
3:08
seconds as the question says in how much
3:12
time will the body travel a distance of
3:16
25 2.5 km therefore it will travel it
3:21
will cover the time that it will cover
