Answer:
Uniform acceleration refers to a situation in which an object undergoes a constant rate of change in its velocity over equal intervals of time. In other words, when an object experiences uniform acceleration, its velocity is changing by the same amount in the same direction during each equal time interval.
Key characteristics of uniform acceleration include:
Constant Change in Velocity: The object's velocity increases or decreases by the same amount during each time interval. This means that the acceleration remains constant over time.
Linear Relationship: The relationship between time and velocity is linear when an object experiences uniform acceleration. This means that the velocity-time graph is a straight line.
Equations of Motion: Uniform acceleration can be described using the equations of motion, such as the following equation:
v = u + at
where:
v is the final velocity,
u is the initial velocity,
a is the acceleration, and
t is the time.
Examples: Objects in free fall near the surface of the Earth, when air resistance is negligible, experience uniform acceleration due to gravity. Similarly, a car moving with constant acceleration or a projectile under the influence of a constant force (e.g., a horizontally launched object) can experience uniform acceleration.
Uniform acceleration is a simplified case of acceleration, as it assumes that the acceleration remains constant over time. In real-world scenarios, acceleration may change over time, leading to non-uniform acceleration. Nonetheless, the concept of uniform acceleration is essential in physics for understanding and solving problems involving motion under constant forces.