A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the vertical component of its velocity at the highest point of its trajectory?
A) 0 m/s
B) 9.8 m/s
C) 19.6 m/s
D) 4.9 m/s
E) 17 m/s

Question

Quizplus · Accepted Answer

At the highest point of its trajectory, the vertical component of the velocity is 0 m/s because the ball momentarily stops moving upward before descending.

A Boy Kicks a Football from Ground Level with an Initial