A ball is tossed upward. Neglecting air drag, the acceleration along its path is

A) 0 g.
B) g downward.
C) g upward.
D) g upward, then g downward.
E) none of the above

Respuesta :

Answer:

B) g downward

Explanation:

There is only one force acting on the ball during its entire motion: the force of gravity, which pulls the ball downwards. The magnitude of the force of gravity is

[tex]F=mg[/tex]

where m is the mass of the ball and g is the acceleration due to gravity. Using Newton's second law, F = ma, we can find the acceleration of the ball as:

[tex]a=\frac{F}{m}=\frac{mg}{m}=g[/tex]

so, the acceleration of the ball is g, and it is downward (as the force of gravity).