Question

Give one example of each type of the following motion:
(a) uniform velocity
(b) variable velocity
(c) variable acceleration
(d) uniform retardation

Answer 1

Hint:
(a) Uniform velocity: The condition in which a body covers the equal level of distances in an equal interval of the time is called the uniform velocity.
(b) Variable velocity: Variable velocity is that which changes with time. When a body covers the unequal level of distances in equal intervals of time in which given specified direction, the body is said to be moving with variable velocity.
(c) Variable acceleration: If the average acceleration is different between different points along with its path, a body is called to be moving with variable acceleration.
(d) Uniform retardation: If velocity of a body reduces with uniform rate this is called as uniform retardation.

Complete answer:
We can find examples of them from our daily life activity.
A) Examples of uniform velocity:
If a car is travelling for $ 5km $ and it covers each $ 1km $ at speed of $ 60\dfrac{{km}}{h} $ then it runs uniform velocity.
B) Examples of variable velocity:
When we drive a car in traffic we have to apply brakes and accelerator, which vary car velocity.
C) Examples of variable acceleration:
When we drive a car on a crawly street we have to maintain speed by increasing and reducing speed.
D) Examples of uniform retardation:
When we throw stone upward it retards with uniform retardation of $ g $.

Note:
Velocity is the rate with which we cover a given distance. So, the government has put a restriction on the speed limit with which you can drive in specific areas as well as the type of road. As you notice, sign boards near school, hospitals drive slowly for the safety of students and patients. So, the above maintenance term comes into use when you drive a car and you should be aware of them.