Question

A ball is tossed vertically upward. When it reaches its highest point (before falling back downward) Group of answer choices the velocity is zero, the acceleration is directed downward, and the force of gravity acting on the ball is directed downward. the velocity is zero, the acceleration is zero, and the force of gravity acting on the ball is zero. the velocity is zero, the acceleration is zero, and the force of gravity acting on the ball is directed downward. the velocity and acceleration reverse direction, but the force of gravity on the ball remains downward. the velocity, acceleration, and the force of gravity on the ball all reverse direction.

Answer 1

At the highest point of its trajectory, a ball tossed vertically upward has a velocity of zero, while the acceleration due to gravity and the force of gravity both remain directed downward.

Step-by-step explanation:

When a ball is tossed vertically upward and reaches its highest point, the ball's velocity is zero because it has stopped moving upward and is about to begin its descent. At this point, the acceleration is NOT zero; it remains constant due to the acceleration due to gravity, which is directed downward toward the center of Earth. The same applies for the force of gravity acting on the ball; it is also directed downward. Hence, at the highest point, the ball's velocity is zero, the acceleration is directed downward at approximately 9.8 m/s², and the force of gravity acting on the ball is directed downward. This remains true for the entire journey, both on the way up and on the way down in free-fall, as the motion is one-dimensional and influenced solely by gravity when we disregard air resistance and other forces.

Answer 2

the velocity is zero, the acceleration is directed downward, and the force of gravity acting on the ball is directed downward

Step-by-step explanation:

Is this exercise in kinematics

v = v₀ - g t

where g is the acceleration of the ball, which is created by the attraction of the ball to the Earth.

At the highest point

velocity must be zero.

The acceleration depends on the Earth therefore it is constant at this point and with a downward direction.

The force of the earth on the ball is towards the center of the Earth, that is, down

all other alternatives are wrong