Motion in One Dimension
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Questions and Answers

What is the significance of a line parallel to the time axis in a velocity-time graph?

  • The particle is moving with constant velocity
  • The particle is decelerating
  • The particle is at rest (correct)
  • The particle is accelerating

    • What does a line with a negative slope in a velocity-time graph represent?

  • The particle is moving with uniform velocity
  • The particle is decelerating
  • The particle is moving in the negative direction with constant velocity (correct)
  • The particle is accelerating

    • What is the acceleration of a body under gravity?

  • Infinity
  • Equal to g (correct)
  • Zero
  • Equal to 60

    • What does a line with a constant slope in a velocity-time graph represent?

    <p>Uniform velocity</p> Signup and view all the answers

    What is the significance of a line perpendicular to the time axis in a velocity-time graph?

    <p>The particle is moving with infinite velocity</p> Signup and view all the answers

    What is the condition for the acceleration of a particle to be constant?

    <p>Both the magnitude and direction of acceleration remain constant</p> Signup and view all the answers

    What is the graphical representation of the motion of a particle with uniform acceleration?

    <p>A parabola</p> Signup and view all the answers

    What is the equation of motion for a particle moving with constant acceleration in scalar form?

    <p>s = ut + 0.5at^2</p> Signup and view all the answers

    What is the acceleration of a body falling towards the earth in the absence of air resistance?

    <p>g</p> Signup and view all the answers

    What is the condition for a particle to move with zero acceleration?

    <p>The particle is moving with constant speed</p> Signup and view all the answers

    What is the relation between distance travelled and magnitude of displacement for a particle moving with zero acceleration?

    <p>The distance travelled is always equal to the magnitude of displacement</p> Signup and view all the answers

    What is the relationship between the angle of acceleration and velocity in two-dimensional motion?

    <p>Other than 0° or 180° and may change with time</p> Signup and view all the answers

    What is the equation of motion for an object undergoing uniform acceleration?

    <p>s = ut + (1/2)at^2</p> Signup and view all the answers

    What is the path of a particle when the angle between acceleration and velocity is 90°?

    <p>Circle</p> Signup and view all the answers

    What is the significance of the concept of a point object in kinematics?

    <p>It is used to simplify the study of motion</p> Signup and view all the answers

    Which of the following statements is true for a particle moving with uniform acceleration?

    <p>The acceleration-time graph is a straight line</p> Signup and view all the answers

    What is the relative velocity between two particles moving in the same direction?

    <p>The difference between their velocities</p> Signup and view all the answers

    What is represented by a line with a constant slope in a velocity-time graph?

    <p>Uniform acceleration</p> Signup and view all the answers

    Which of the following is true for a particle moving under gravity?

    <p>The acceleration is constant</p> Signup and view all the answers

    What is the graphical representation of the motion of a particle with uniform acceleration?

    <p>A parabola in a velocity-time graph</p> Signup and view all the answers

    What does a velocity-time graph with a constant slope represent?

    <p>Uniform velocity</p> Signup and view all the answers

    A particle is moving under gravity. What is its acceleration?

    <p>Equal to 9.8 m/s²</p> Signup and view all the answers

    What does a velocity-time graph with a changing slope represent?

    <p>Non-uniform acceleration</p> Signup and view all the answers

    What is the significance of a line parallel to the position axis in a velocity-time graph?

    <p>Zero velocity</p> Signup and view all the answers

    What does a velocity-time graph with a negative slope represent?

    <p>Retardation</p> Signup and view all the answers

    What is the fundamental characteristic of one-dimensional motion?

    <p>The body changes its position in a straight line.</p> Signup and view all the answers

    What is the state of a body when it does not change its position with respect to a frame of reference?

    <p>Rest</p> Signup and view all the answers

    What is the characteristic of a particle or point mass?

    <p>It has zero dimension and significant mass.</p> Signup and view all the answers

    What type of motion occurs when two coordinates of the position of a body change with time?

    <p>Two-dimensional motion</p> Signup and view all the answers

    What is the requirement for a body to be treated as a particle?

    <p>The size of the body is negligible in comparison to its range of motion.</p> Signup and view all the answers

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