Seconds Study Guide

Definition of Seconds

Seconds are a unit of time measurement. It is the base unit of time in the International System of Units (SI).

Conversion

1 minute = 60 seconds

1 hour = 3600 seconds

1 day = 86,400 seconds

Uses of Seconds

- Timing events

- Measuring the duration of activities

- Calculating speed and velocity

Adding and Subtracting Seconds

To add or subtract seconds, simply perform the arithmetic operation as you would with any other numerical value. For example, to add 30 seconds to a time of 12:45:20, simply add 30 to the seconds value, resulting in 12:45:50.

Practice Problems

1. Convert 2 hours to seconds.

2. If an event lasted 3 minutes and 45 seconds, how many seconds did it last in total?

3. If a car travels at a speed of 25 meters per second, how far will it travel in 60 seconds?

Summary

Seconds are an essential unit of time measurement, widely used for various purposes such as timing events, measuring activity duration, and calculating speed. Understanding the conversion of seconds to other units of time and practicing addition and subtraction of seconds will strengthen your grasp of this fundamental concept of time measurement.