Respuesta :
The acceleration of an object that is acted upon only by the force of gravity while moving in the air is the downward acceleration of gravity.
The acceleration of the ball is the acceleration due to gravity (9.81 m/s²).
Reason:
The known parameter are;
Initial speed of the ball towards the Earth, v = 20 m/s
a. Required:
The acceleration of the ball
Solution;
According to Newton's First Law of motion, the ball will continue the downward motion at 20 m/s unless acted on by a force.
The force acting on the ball is its weight, W = m·g
Where;
- g = The acceleration due to gravity
Given that the ball is being acted on by a force that is given by the product
of the mass of the ball and the acceleration due to gravity, g, the ball is
given an acceleration equal to the acceleration due to gravity in the
downward direction.
Therefore;
- The acceleration of the ball due to gravity, is g the acceleration due to gravity.
Learn more about gravitational acceleration here:
https://brainly.com/question/14234472
