A projectile starts at the coordinate origin, where the displacement vector also originates. The initial velocity, v0, makes an angle θ0 with the horizontal where 0 < θ0 < 90°. At the instant when the projectile is at the highest point of its trajectory, the displacement, velocity and acceleration vectors are ,
and
. Which statement is true?
A) is parallel to
.
B) is perpendicular to
.
C) is parallel to
.
D) is perpendicular to
.
E) is perpendicular to
.
Correct Answer:
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