Statement 1 A body thrown up will be having initial...

Statement 1
A body thrown up will be having initial retardation and then acceleration under the influence of constant $\overline{\mathrm{g}}$.
and
Statement 2
Effective acceleration vector can be same for a body undergoing retardation or acceleration

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Key Concepts

Projectile Motion Kinematics

Projectile motion studies how objects are thrown or projected into the air under the influence of gravity. Key aspects include the object's initial velocity, its upward motion where it slows down (retardation) due to gravity, and its subsequent downward motion where gravity accelerates it. This framework underscores the predictable, parabolic trajectory of such objects.

Uniform Gravitational Acceleration

This concept refers to the constant acceleration (commonly denoted as g) experienced by objects near the Earth's surface. It highlights that no matter the state of motion—whether an object is moving upward or downward—the acceleration due to gravity remains fixed in magnitude and direction.

Vector Nature of Acceleration

Acceleration is a vector quantity, meaning it has both magnitude and direction. This principle is crucial because it explains that the same acceleration vector—regardless of whether an object is speeding up or slowing down—remains effective. The term effective acceleration emphasizes that the controlling force (gravity in this context) is constant, even as the object's velocity changes in response.

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