This question is about projectile motion. The barrel of a rifle is held at an angle 30° the above the horizontal. A bullet fired from the rifle leaves the barrel at time t=0 with a speed 200 m/s. The graph below shows the variation with time t of the vertical height h of the bullet. As shown, the bullet is in the air for 20 seconds.
a) What is the horizontal velocity of the bullet? b.) What is the initial vertical velocity of the bullet
c.) what is the vertical velocity of the bullet when it reaches maximum height
d.) what is the range of the bullet