A player throws a ball vertically upwards with velocity u....

A player throws a ball vertically upwards with velocity $u$. At highest point (a) both the velocity and acceleration of the ball are zero. (b) the velocity of the ball is $u$ but its àcceleration is zero. (c) the velocity of the ball is zero but its acceleration is $g$ - (d) the velocity of the ball is $u$ but its acceleration is $g$.

A player throws a ball vertically upwards with velocity $u$. At highest point (a) both the velocity and acceleration of the ball are zero.
(b) the velocity of the ball is $u$ but its àcceleration is zero.
(c) the velocity of the ball is zero but its acceleration is $g$ -
(d) the velocity of the ball is $u$ but its acceleration is $g$.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Gravitational Acceleration

Gravitational acceleration is the constant acceleration that all objects experience near the Earth's surface, approximately 9.8 m/s² downward. This acceleration is responsible for the continuous change in velocity of an object in free-fall, regardless of its current speed or direction of motion.

Projectile Motion

Projectile motion involves the analysis of objects thrown into the air and moving under the influence of gravity alone. In vertical launches, the motion is described by constant acceleration due to gravity, which dictates the change in the object's velocity and displacement over time.

Velocity vs Acceleration

Velocity is the rate at which an object changes its position, while acceleration is the rate at which its velocity changes. At the highest point of a vertical trajectory, the object's instantaneous velocity is zero because it momentarily stops before falling back, yet the acceleration due to gravity is still active and constant.

Transcript

Please give Ace some feedback