The coordinates of a moving particle at any time are given by r = at² and = bt². The speed of the particle at any moment is
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Answer:
r=
i
^
at
2
+
j
^
bt
2
,V=
dt
dr
=
i
^
2at+
j
^
2bt
∴ Magnitude of v=
(4a
2
t
2
+4b
2
t
2
)
=2t
(a
2
+b
2
)
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