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Questions and Answers
In uniform rectilinear motion, the acceleration of an object is zero.
In uniform rectilinear motion, the acceleration of an object is zero.
True (A)
Uniformly varied rectilinear motion is a type of motion where the acceleration is constant.
Uniformly varied rectilinear motion is a type of motion where the acceleration is constant.
True (A)
The velocity-time graph of an object in uniform rectilinear motion is a parabola.
The velocity-time graph of an object in uniform rectilinear motion is a parabola.
False (B)
The acceleration of an object in uniformly varied rectilinear motion is inversely proportional to the time.
The acceleration of an object in uniformly varied rectilinear motion is inversely proportional to the time.
The distance-time graph of an object in uniform rectilinear motion is a straight line.
The distance-time graph of an object in uniform rectilinear motion is a straight line.
La velocidad de un objeto en UARM cambia a una tasa constante en función del tiempo.
La velocidad de un objeto en UARM cambia a una tasa constante en función del tiempo.
La gráfica de desplazamiento vs tiempo para un objeto en UARM es una lÃnea recta.
La gráfica de desplazamiento vs tiempo para un objeto en UARM es una lÃnea recta.
La ecuación $v^2 = u^2 + 2as$ describe la relación entre la velocidad final y la posición inicial de un objeto en UARM.
La ecuación $v^2 = u^2 + 2as$ describe la relación entre la velocidad final y la posición inicial de un objeto en UARM.
Un objeto en UARM puede moverse en una dirección circular.
Un objeto en UARM puede moverse en una dirección circular.
La gráfica de velocidad vs tiempo para un objeto en UARM es una lÃnea curva.
La gráfica de velocidad vs tiempo para un objeto en UARM es una lÃnea curva.
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Study Notes
Uniform Rectilinear Motion
- Acceleration of an object is zero, indicating constant velocity.
- Distance-time graph of an object is a straight line, showing uniform motion.
Uniformly Varied Rectilinear Motion
- Acceleration is constant, resulting in a non-uniform velocity.
- Velocity-time graph is not a parabola, unlike a common misconception.
- Acceleration is inversely proportional to time, implying a direct relationship between acceleration and time.
Uniformly Accelerated Rectilinear Motion (UARM)
- UARM is a type of motion that occurs when an object moves in a straight line with a constant acceleration.
Characteristics of UARM
- Object moves in a straight line (rectilinear motion).
- Constant acceleration, meaning it does not change with time.
- Velocity of the object changes at a constant rate.
Kinematic Equations for UARM
- v = u + at: final velocity equals initial velocity plus acceleration times time.
- s = ut + (1/2)at^2: displacement equals initial velocity times time plus half acceleration times time squared.
- v^2 = u^2 + 2as: final velocity squared equals initial velocity squared plus two acceleration times displacement.
Graphical Representation of UARM
- Velocity-time graph: a straight line with a constant slope, representing constant acceleration.
- Displacement-time graph: a parabola, showing increasing displacement with time.
Examples of UARM
- Freely falling objects under gravity, such as a ball dropped from a height.
- Objects moving on a frictionless inclined plane.
- Rockets accelerating in a straight line.
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