Question

The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

Answer 1

3.1.2 Velocity

If a particle moves through a displacement ∆r in a time interval ∆t then its average velocity

for that interval is

v =

∆r

∆t

=

∆x

∆t

i +

∆y

∆t

j +

∆z

∆t

k (3.4)

As before, a more interesting quantity is the instantaneous velocity v, which is the limit

of the average velocity when we shrink the time interval ∆t to zero. It is the time derivative

of the position vector