Question

what is the flight time of a cannon fires a cannonball with a muzzle velocity of 50.0 m/sec at an angle of 40 degrees.

Answer 1

To be given in question

Initial velocity (u)=50m/sec

$g=9.8m/sec^2$

$\theta=40°$

To be asked in question

Total time in flight

T=?

We know that

$T=\frac{2usin\theta}{g}\rightarrow(1)$

Put value in eqution (1)

$T=\frac{2\times 50\times sin(40°)}{9.8}$

T=6.55 sec