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Q: Which of the following pairs always have the same direction?
  • A. force, velocity
  • B. force, acceleration
  • C. force, displacement
  • D. force, momentum
Correct Answer: Option B - The direction of force and acceleration are always the same. Physical quantities, which have both magnitude and direction, are called vector quantities. Examples- force, acceleration, velocity, momentum, etc. Physical quantities that require only magnitude, but not direction, are called scalar quantities. Such as speed, distance, mass, volume etc.
B. The direction of force and acceleration are always the same. Physical quantities, which have both magnitude and direction, are called vector quantities. Examples- force, acceleration, velocity, momentum, etc. Physical quantities that require only magnitude, but not direction, are called scalar quantities. Such as speed, distance, mass, volume etc.

Explanations:

The direction of force and acceleration are always the same. Physical quantities, which have both magnitude and direction, are called vector quantities. Examples- force, acceleration, velocity, momentum, etc. Physical quantities that require only magnitude, but not direction, are called scalar quantities. Such as speed, distance, mass, volume etc.