Question

Pair as many as you can and tabulate it: Speed, acceleration, odometer, second, distance, km, m/s2, vector quantity, metre, distance between two cities, m/s, time, velocity, displacement.

Answer 1

Answer: the distance travelled by an object is called speed.

Change in the velocity of an object per unit time is called acceeleration.

Velocity is the speed of an object using indefinite direction.

displacement is a vector quantity requires both magnitude and direction for explanation.

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Answer 2

The pair that we find in the above example are

1. Speed m/sec
2. Vector quantity displacement
3. Vector quantity velocity
4. Distance between two cities metre
5. Acceleration odometer
6. Distance between two cities km
7. Acceleration m/sec²

Explanation:

• The acceleration can be defined as a rate of change of velocity. On the other hand the velocity can be defined as the rate of change of the displacement of a body.
• As a result of this is the unit of each of the following is different. Displacement is a vector quantity why distance is a scalar quantity.

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