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Physics
Physics
Problem
If the speed of a vehicle increases by 2 m/s., its kinetic energy is doubled. Then the original speed of the vehicle is- (1)
(
2
+
1
)
(\sqrt{2} + 1)
(
2
+
1
)
m/s (2)
2
\sqrt{2}
2
m/s (3)
2
(
2
+
1
)
2(\sqrt{2} + 1)
2
(
2
+
1
)
m/s (4)
2
(
2
+
1
)
\sqrt{2}(\sqrt{2} + 1)
2
(
2
+
1
)
m/s
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