Question

Ingrid kicks a football with an initial velocity at 12 m/s at an angle of 45 relative to the ground

Answer 1

Equation of movement is

y(x) = x * tg (a) -
`(g)/(2 * u^(2) * cos (a)^(2) ) * x^(2)`

where y is y-coordinate, x - x coordinate, u - your initial speed, a = angle above horizon.

differentiate it to get dy/dx (speed)