An object is launched up Ns degree slope at an angle of Na degrees above the incline of the slope

An object is launched up Ns degree slope at an angle of Na degrees above the incline of the slope with an initial speed of S0 m/s. How far up the slope does the object land?

From Calculus-Based Physics I: Problems with Solutions

A ball of mass M is thrown from the ground at an angle of α from the vertical with a speed S

A ball of mass M is thrown from the ground at an angle of α from the vertical with a speed S. The ball lands on top of a building that height is h. What is the speed of the ball just before it lands on the roof of the building?

From Calculus-Based Physics I: Problems with Solutions

What is Magnitude of Angle between Vectors?

The vector A = (A_x , A_y) = ( +2.0 m, +2.0 m) and the vector B = (B_x , B_y) = ( +1.0 m, -1.0 m).
What is the magnitude of the angle between the vectors A and B?