If an object is thrown vertically up with the initial speed u from the ground, then the time taken by the object to return back to ground is
A. \(\frac{u^{2}}{2 g}\)
B. \(\frac{u^{2}}{g}\)
C. \(\frac{u}{2 g}\)
D. \(\frac{2 u}{g}\)
Answer:D
If an object is thrown vertically up with the initial speed u from the ground, then the time taken by the object to return back to ground is
A. \(\frac{u^{2}}{2 g}\) B. \(\frac{u^{2}}{g}\) C. \(\frac{u}{2 g}\) D. \(\frac{2 u}{g}\)