Question

A quarterback shows a football with an initial speed of 20m/s at an angle of 40° above the horizontal. Neglecting the height of release and assuming no air friction, answer the two questions below:

When the ball is at its maximum height, the horizontal and vertical components of the velocity vector are:

A) Vx = 0m/s, Vy = 0m/s

B) Vx = 0m/s, Vy = 18.4 m/s

C) Vx = 15.3 m/s, Vy =0m/s

When the ball is at its maximum height, the horizontal and vertical components of the acceleration vector are:

A) Ax = +9.8m/s^2, Ay = 0m/s^2

B) Ax = -9.8m/s^2, Ay = +9.8m/s^2

C) Ax = 0m/s^2 Ay = - 9.8 m/s^2

Answer 1