A) \[3h{{v}_{0}}\]
B) \[2h{{v}_{0}}\]
C) \[\frac{3}{2}h{{v}_{0}}\]
D) \[\frac{1}{2}h{{v}_{0}}\]
Correct Answer: A
Solution :
Kinetic energy \[\frac{1}{2}m{{v}^{2}}=h(v-{{v}_{0}})\] \[=h(4{{v}_{0}}-{{v}_{0}})\] \[=3h\,{{v}_{0}}\]
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