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BITSAT 2023 Shift 1 Solved Question Paper
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© examsnet.com
Question : 1
Total: 130
An object moves with speed
v
1
,
v
2
and
v
3
along a line segment
A
B
,
B
C
and
C
D
respectively as shown in figure. Where
AB
=
BC
and
AD
=
3
AB
, then average speed of the object will be:
v
1
v
2
v
3
3
(
v
1
v
2
+
v
2
v
3
+
v
3
v
1
)
3
v
1
v
2
v
3
(
v
1
v
2
+
v
2
v
3
+
v
3
v
1
)
(
r
2
+
r
2
+
r
3
)
3
(
v
1
+
v
2
+
v
3
)
3
v
1
v
2
v
3
Validate
Solution:
👈: Video Solution
Consider,
AB
=
x
BC
=
x
2
x
+
CD
=
3
x
⇒
CD
=
3
x
−
2
x
=
x
Average speed of the object
⟨
v
⟩
=
Total distance
Total time
<
v
>
=
3
x
x
v
1
+
x
v
2
+
x
v
3
=
3
v
1
v
2
v
3
v
2
v
3
+
v
1
v
3
+
v
1
v
2
© examsnet.com
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