Projectiles

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If a projectile is launched from the ground at an initial velocity of 40 m/s, what speed does it return to the ground with?

If a projectile launches from and lands at the ground, and has a HANGTIME of 4 seconds, what is its VERTICAL velocity when it hits the ground? (use -10 m/s2 for gravity concept)

What angle could you launch a projectile with that would give you the same distance (range) as one launched at 30 degrees? Neglect air resistance.

True/False Vertical and horizontal velocities are independent of each other for a projectile.

What angle would give the greatest launch distance, if all angles were launched at the same initial velocity?

If we know both vertical and horizontal velocity components for a projectile, what trig function do we use to find the launch angle?

If we know the initial velocity and launch angle, what trig function would we use to find the vertical velocity component?

Which velocity component remains constant for the path of a projectile?