A) \[557\,\,\text{J}\]
B) \[246\,\,\text{J}\]
C) \[1048\,\,\text{J}\]
D) \[1297\,\,\text{J}\]
Correct Answer: D
Solution :
Here: mass\[m=3\text{ }kg\], height\[h=25m\] and time\[t=3\sec \] Final velocity of body after\[3\sec \], \[v=u+gt=0+9.8\times 3=29.4\,\,m/s\] Hence, kinetic energy of the body is given by \[=\frac{1}{2}m{{v}^{2}}=\frac{1}{2}\times 3\times {{(29.4)}^{2}}\]You need to login to perform this action.
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