A projectile is fired upward at an angle ? above the horizontal with an initial speed v0. At its maximum height, what are its velocity vector, its speed, and its acceleration vector?

Solution 9DQ Step 1: Given data The projectile is projected upward at an angle Initial speed = v 0 To find velocity vector, speed and acceleration vector at its maximum height Step 2: To find Velocity vector Horizontal component of velocity v = x cos0 Vertical component of velocity v y v si0 - gt At maximum height v = v cxs 0 v = 0 y Therefore Velocity vector v = v c0s i + 0j ˆ Velocity vector v = v cos i ˆ 0