Recent content by hello_there

  1. H

    Projectile motion. how long does it take for the projectile to git the ground?

    i guess we have to use a quadratic equation or there would be no way to do it, I'm just not sure how to incorperate g into the equation
  2. H

    Projectile motion. how long does it take for the projectile to git the ground?

    we we told we can't use the equations like v=u+at and v^2= u^2 + 2as to work it out
  3. H

    Projectile motion. how long does it take for the projectile to git the ground?

    I have no idea on where to start with this. Also we are not allowed to use The normal physics equations, we have to use maths. At time t = 0 a projectile is fired from a height of h above level ground at an elevation angle of a and a speed of v. Show that the time when the projectile hits...