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Physics
Physics
Problem
A particle initially at
x
=
+
a
x=+a
x
=
+
a
moves to
x
=
−
2
a
x=-2a
x
=
−
2
a
on the same straight line. Its displacement expressed in terms of
a
a
a
is a)
+
3
a
+3a
+
3
a
b)
−
a
-a
−
a
c)
−
3
a
-3a
−
3
a
d)
+
a
+a
+
a
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