Consider the motion of the two projectiles fired at t = 0. Their initial speeds are both v0 but they are fired with different initial angles θ1 and θ2 with respect to the horizontal.

What is the ratio of the times of the flights?

flight time is determined by the vertical component of velocity

Tf = 2[v0 sin(Θ)] / g

so the ratio of the flight times is the ratio of the sines of the launch angles

To find the ratio of the times of flight for the two projectiles, we can use the equations of projectile motion. The time of flight is the total time it takes for a projectile to reach the ground.

Let's consider the first projectile with initial angle θ1. The horizontal and vertical motions of the projectile are independent of each other. The horizontal motion is at a constant velocity, while the vertical motion is governed by the acceleration due to gravity.

The horizontal component of the initial velocity can be found using the equation: v0x = v0 * cos(θ1)
The vertical component of the initial velocity can be found using the equation: v0y = v0 * sin(θ1)

The time of flight can be found using the equation: t = (2 * v0y) / g, where g is the acceleration due to gravity.

Now, let's consider the second projectile with initial angle θ2. Following the same steps as above, we find the horizontal and vertical components of the initial velocities: v0x = v0 * cos(θ2) and v0y = v0 * sin(θ2).

The time of flight for the second projectile will be: t = (2 * v0y) / g.

To find the ratio of the times of flight, we divide the time of flight for the second projectile by the time of flight for the first projectile:

t2 / t1 = [(2 * v0y2) / g] / [(2 * v0y1) / g]

The acceleration due to gravity (g) and the initial velocity (v0) cancel out in the ratio, giving us:

t2 / t1 = v0y2 / v0y1

Therefore, the ratio of the times of flight is equal to the ratio of the vertical components of the initial velocities:

t2 / t1 = sin(θ2) / sin(θ1)

So, to find the ratio of the times of flight for the two projectiles, we need to know the values of the initial angles θ1 and θ2.