A Football Is Kicked at an Angle $\theta$ With Respect to the Horizontal

question 25

Multiple Choice

A football is kicked at an angle $\theta$ with respect to the horizontal. Which one of the following statements best describes the acceleration of the football during this event if air resistance is neglected?

• A)The acceleration is zero m/s² at all times.
• B)The acceleration is 9.8 m/s² at all times.
• C)The acceleration is zero m/s² when the football has reached the highest point in its trajectory.
• D)The acceleration is positive as the football rises, and it is negative as the football falls.
• E)The acceleration starts at 9.8 m/s² and drops to some constant lower value as the ball approaches the ground.