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Class 11 NEET Physics Motion in a Straight Line Questions
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© examsnet.com
Question : 1
Total: 58
A particle is moving along
x
-axis with its position (x) varying with time
(
t
)
as
x
=
α
t
4
+
β
t
2
+
γ
t
+
δ
. The ratio of its initial velocity to its initial acceleration, respectively, is:
[NEET 2024 Re]
2
α
:
δ
γ
:
2
δ
4
α
:
β
γ
:
2
β
Validate
Solution:
Position of particle,
x
=
α
t
4
+
β
t
2
+
γ
t
+
δ
Velocity
v
=
d
x
d
t
=
4
α
t
3
+
2
β
t
+
γ
Initial velocity
=
v
(
t
=
0
)
=
γ
Acceleration
a
=
d
v
d
t
=
12
α
t
2
+
2
β
Initial acceleration
=
a
(
t
=
0
)
=
2
β
∴
v
(
t
=
0
)
a
(
t
=
0
)
=
γ
2
β
© examsnet.com
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