Question

Define -:

1 Vector quantities
2 Scaler quantities
3 Distance
4 Displacement
5 Speed
6 Velocity
7 Accerleration
8 Accerleration formula
9 uniform velocity
10 Non- uniform velocity​

Answer 1

1. Vector Quantities

- A vector quantity is defined as the physical quantity that has both magnitude as well as direction like force and weight.

2. Scalar Quantities

- A scalar quantity is defined as the physical quantity that has only magnitude, for example, mass and electric charge.

3. Distance

- Distance is the total movement of an object without any regard to direction. We can define distance as to how much ground an object has covered despite its starting or ending point.

4. Displacement

- Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude. It is represented as an arrow that points from the starting position to the final position.

5.Speed

- The rate of change of position of an object in any direction.

It is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.

6. Velocity

- The meaning of velocity of an object can be defined as the rate of change of the object’s position with respect to a frame of reference and time. It might sound complicated but velocity is basically speeding in a specific direction. It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity.

7. Acceleration

- The rate of change of velocity with respect to time.

Acceleration is a vector quantity as it has both magnitude and direction. It is also the second derivative of position with respect to time or it is the first derivative of velocity with respect to time.

8. Acceleration formula

- Acceleration formula is given as:

$Acceleration = \triangle\frac{v}{t}$

9. Uniform Velocity

- A body is said to be in uniform motion if it moves with a constant velocity. If the magnitude and/or direction of the velocity changes, then the body is not in uniform motion.

10. Non - uniform Velocity

- A motion in which body covers unequal distances in equal intervals of time is known as a non – uniform motion.

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