Question

What is the total time of flight of an object projected vertically upwards with a speed of 30ms? (g 10 ms'2)

Answer 1

Gives

v=30m/sec

g=10m/sec²

Total time period of flight

$T=\frac{2usin\theta}{g}$

$T_{max}=\frac{2u}{g}\\sin\theta=sin90°=1$

Put value

$T=\frac{2u}{g}=\frac{2\times30}{10}=6sec$