Measurement of Time and Motion Class 7 Long Question Answer

Measurement of Time and Motion Class 7 Long Question Answer

Measurement of Time and Motion Class 7 Long Question Answer

Question 1.

What is the difference between uniform and non-uniform motion? Provide examples to illustrate your explanation.

Answer:

Uniform motion occurs when an object moves at a constant speed in a straight line, covering equal distances in equal intervals of time. For example, a car cruising on a straight highway at a steady speed is in uniform motion. In contrast, non-uniform motion involves changes in speed or direction, such as a car navigating through city traffic, where it frequently accelerates and decelerates.

Question 2.

How can we calculate the average speed of an object? Provide a formula and an example to demonstrate your explanation.

Answer:

The average speed of an object is calculated by dividing the total distance covered by the total time taken. The formula is given by:

Average Speed = [latex]\frac{\text { Total distance }}{\text { Total time }}[/latex]

For example, if a car travels 150 meters in 10 seconds, the average speed is:

Average Speed = [latex]\frac{150 \mathrm{~m}}{10 \mathrm{~s}}[/latex] = 15 m/s

This means the car moves at an average speed of 15 meters per second.