Question

A bullet is fired with a velocity of $196m/s$ at an angle of ${30}^o$ with the horizontal. Time of flight of the bullet is

• A. $10s$
• B. $20s$
• C. $30s$
• D. $40s$

Answer 1

The correct option is B $20s$

We know that time of flight for a projectile will be given as:

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

Hence, putting these value in above equation we will find:

$T=\frac{2\times 196\times sin30}{9.81}=20second$