Consider the following examples: 1. A car moving on a crowded street is an example of uniform motion. 2. A person jogging in a park. 3. A train…

The correct option is (d).

Explanation

Motion is classified into two types based on the consistency of velocity:

• Uniform Motion: An object covers equal distances in equal intervals of time (constant speed and direction).
• Non-Uniform Motion: An object covers unequal distances in equal intervals of time (changing speed or direction).

Statement-wise Analysis:

• 1. A car moving on a crowded street: On a crowded street, a car must frequently apply brakes, accelerate, or stop due to traffic and obstacles. Since its speed varies continuously, it covers unequal distances in equal time intervals. This is a classic example of non-uniform motion.
• 2. A person jogging in a park: A person jogging typically varies their speed due to fatigue, terrain changes, or turns. They do not maintain a perfectly constant velocity. Thus, this is an example of non-uniform motion.
• 3. A train slowing down before a station: "Slowing down" implies deceleration (negative acceleration). Since the speed of the train is decreasing over time, it is not constant. Therefore, this is an example of non-uniform motion.

Key Takeaway:

Any motion that involves acceleration, deceleration, or a change in direction is classified as non-uniform motion. Real-world motion (like driving in traffic or jogging) is almost always non-uniform.