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Rest and Motion: Kinematics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsRest and Motion: Kinematics1 Mark
Question
An object may have:
  1. Varying speed without having varying velocity.
  2. Varying velocity without having varying speed.
  3. Nonzero acceleration without having varying velocity.
  4. Nonzero acceleration without having varying speed.
✓

Answer

  1. Varying velocity without having varying speed.
  1. Nonzero acceleration without having varying speed.

Explanation:

Velocity and acceleration are vector quantities that can be changed by changing direction only (keeping magnitude constant).

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