Guys please help me ​

1)

2)

3)

4)

Explanation:

1)

We can use the following equation:

Here, the initial velocity in the y-direction is zero, the final y position is zero and the initial y position is 25 m.

2)

The equation of the motion in the x-direction is:

3)

The velocity in the y-direction of the stone will be:

Now, the velocity in the x-direction is 15 m/s then the velocity will be:

4)

The angle of this velocity is:

Then α=55.92° negative from the x-direction.

I hope it helps you!

powerful computers now, not then