Question 2
A projectile is fired with a velocity of 20 cm-1 at an angle of 40o to the horizontal. Determine the components of the velocity of the projectile at its maximum height.
Observation
This was another popular questions because many candidates recognized the horizontal component as Vx = u cos ɵ and the vertical component as vy = 0 at the maximum height to obtain the values of 15.32 ms-1 and 0.
The expected answer is
Horizontal component
vx = 20 cos 40o = 15.32 ms-1
Vertical component
vy = 0