contestada

Qualitatively, what is the direction of the tennis ball’s acceleration a when it is about halfway between its highest point (where its speed goes to zero) and its lowest point (where its speed is a maximum?

Respuesta :

cjrodriguez89

Answer:

Downward.

Explanation:

Once released, neglecting air resistance, the only force acting on the ball -which is responsible for the acceleration of the ball according Newton's 2nd Law, is gravity, which always points downward.

So, once in movement, regardless the point of the trajectory that it is at , the acceleration will point downward.