Kinematics and Equations - Physics Learning 2

What is vibratory motion?

Answer: The to and fro motion of a body about it's mean position is said to be vibratory motion. For example motion of pendulum of clock, children playing on see-saw etc.

What are scalar quantities?

Answer: Quantities which can be described completely by their magnitude are called scalars. For example 100 K temperature, 10 s time etc.

Why vectors cannot be described by only magnitude?

Answer: Vectors are the quantities which are described by magnitude and direction both. If we take only magnitude then a vector will be incomplete and won't give full information. For example 10 N force acting towards East.

What is difference between distance and displacement?

Answer: Distance is defined as the length of separation between two points while displacement is termed as the shortest distance between two points.

Define uniform speed

Answer: If a body covers equal distance in equal intervals of time then it is said to be moving at uniform speed. Mathematically speed is defined as v = S⁄t here v is speed of object, S is the distance covered and t is time taken.