Kinematics and Equations - Physics Learning 2

Learn Kinematics and Equations questions with answers. This prep guide includes questions like, what is vibratory motion?, what are scalar quantities?, why vectors cannot be described by only magnitude?, what is difference between distance and displacement?, define uniform speed and others below.

Kinematics and Equations Learning 2

Question: 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.

Question: 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.

Question: 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.

Question: 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.

Question: 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.