A boy kicks a football with an initial velocity of 20 m/s at an angle of 25° above the horizontal. The magnitude of the acceleration of the ball while it is in flight is A) 25 m/s². B) 20 m/s². C) 9.8 m/s². D) 8.4 m/s². E) 0 m/s².

Question

Quizplus · Accepted Answer

The only force acting on the ball during its flight is gravity, which has an acceleration of 9.8 m/s^2 downward. The angle at which the ball is kicked does not affect the acceleration due to gravity. Therefore, the magnitude of the acceleration of the ball while it is in flight is 9.8 m/s^2, which is choice C.

A Boy Kicks a Football with an Initial Velocity of 20