the basic motion equation of a projectile is given by h=(vt)-(gt^2) where h is the height in m, t is the time taken in s, v is the vertical component, g is the acceleration.

a)Find the expression for time of flight?
b)Specify the expression for h such that there is no real solution?

The time of flight is obtained when the vertical displacement is zero.

When there is no real solution, b^2 -4ac <0, from an equation in the form ax^2 + bx + c=0

The time of flight is obtained when the vertical displacement is zero.

When there is no real solution, b^2 -4ac <0, from an equation in the form ax^2 + bx + c=0