Question

1. A bullet is fired at an angle of 30degrees to the horizontal with a velocity of 150m/s calculate the time the bullet takes to attain it's maximum height

Answer 1

The time required the bullet takes to attain it's maximum height

$$t=\frac{v_0\sin\theta}{g}$$

$$t=\frac{150*\sin30^\circ}{9.8}=7.65\;\rm s$$