The bullet takes off from the rifle at a speed of 800 km / h. Ignoring air resistance, determine at what height

The bullet takes off from the rifle at a speed of 800 km / h. Ignoring air resistance, determine at what height the bullet will be 5 seconds after firing vertically up?

The formula for calculating the height of the bullet when fired vertically upward (the movement is equally slow, a <0 m / s ^ 2):

S = V0 * t – a * t ^ 2/2, where according to the condition V0 (bullet exit velocity from a rifle) = 800 km / h = 222.2 m / s; a (bullet acceleration) = g (gravitational acceleration) = 9.81 m / s ^ 2; t (bullet travel time) = 5 s.

Let’s perform the calculation:

S = 222.2 * 5 – 9.81 * 5 ^ 2/2 ≈ 988 m.

Answer: In 5 seconds, the bullet will be at an altitude of 988 meters.