Question

A projectile of mass 0.257 kg is shot from
a cannon, at height 6.4 m, as shown in the
figure, with an initial velocity vi having a
horizontal component of 6.4 m/s.
The projectile rises to a maximum height of

y above the end of the cannon’s barrel and
strikes the ground a horizontal distance
x
past the end of the cannon’s barrel.
Find the magnitude of the velocity vector
when the projectile hits the ground. The
acceleration of gravity is 9.8 m/s2 .
Answer in units of m/s