A football is kicked at an angle 25 degrees with respect to the x-axis. The ball hits the ground after 3 sec. Which one of the following statements best describes the acceleration of the football during this time interval if air resistance is neglected? The acceleration is zero m/s2 at all times. b. The acceleration is zero m/s2 when the football has reached the highest point in its path.

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter3: Vectors And Two-Dimensional Motion
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A football is kicked at an angle 25 degrees
with respect to the x-axis. The ball hits the
ground after 3 sec. Which one of the
following statements best describes the
acceleration of the football during this time
interval if air resistance is neglected?
a. The acceleration is zero m/s2 at all
times.
b. The acceleration is zero m/s2 when
the football has reached the highest
point in its path.
c. The acceleration is positive as the
football rises, and it is negative as
the football falls.
d. The acceleration starts at 9.8 m/s2
and drops to some constant lower
value as the ball approaches the
ground.
e. The acceleration is 9.8 m/s2 at all
times.
Transcribed Image Text:A football is kicked at an angle 25 degrees with respect to the x-axis. The ball hits the ground after 3 sec. Which one of the following statements best describes the acceleration of the football during this time interval if air resistance is neglected? a. The acceleration is zero m/s2 at all times. b. The acceleration is zero m/s2 when the football has reached the highest point in its path. c. The acceleration is positive as the football rises, and it is negative as the football falls. d. The acceleration starts at 9.8 m/s2 and drops to some constant lower value as the ball approaches the ground. e. The acceleration is 9.8 m/s2 at all times.
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