The speed of light is approximately 3 × 10 8 meters per second. How far will light travels in 10 seconds?

Given, The speed of light is approximately 3 × 10 8 meters per second. We need to find how far the light travels in 10 seconds. Standard form is used to express very small and very large numbers in a compact and efficient way. Each time you divide a number by 10 each digit within the number moves one place order to the right. Any small number can be expressed in standard form by writing it as a number between 1 and 10 divided by a suitable power of 10 . We know that, The distance travelled = S p e e d o f l i g h t × t i m e = 3 × 10 8 × 10 = 3 × 10 9 meters Therefore, the light will travel 3 × 10 9 meters in 10 seconds.

The speed of light is approximately 3 × 10 8 meters per second. How far will light travel in 20 seconds?

Given, The speed of light is approximately 3 × 10 8 meters per second. We need to find how far the light travels in 20 seconds. Standard form is used to express very small and very large numbers in a compact and efficient way. Each time you divide a number by 10 each digit within the number moves one place order to the right. Any small number can be expressed in standard form by writing it as a number between 1 and 10 divided by a suitable power of 10 . We know that, The distance travelled = S p e e d o f l i g h t × t i m e = 3 × 10 8 × 20 = 6 × 10 9 meters Therefore, the light will travel 6 × 10 9 meters in 20 seconds.

The speed of light is approximately 3 × 10 8 meters per second. How far will light travel in 102 seconds?

Given, The speed of light is approximately 3 × 10 8 meters per second. We need to find how far the light travels in 102 seconds. Standard form is used to express very small and very large numbers in a compact and efficient way. Each time you divide a number by 10 each digit within the number moves one place order to the right. Any small number can be expressed in standard form by writing it as a number between 1 and 10 divided by a suitable power of 10 . We know that, The distance travelled = S p e e d o f l i g h t × t i m e = 3 × 10 8 × 102 = 306 × 10 8 = 3 . 06 × 10 10 meters Therefore, the light will travel 3 . 06 × 10 10 meters in 102 seconds.

E M B I B E

Cambridge IGCSE® Mathematics Core and Extended Coursebook Second Edition>Number>Chapter 5 - Fractions and Standard Form>Exercise 5.13

Karen Morrison and Nick Hamshaw Solutions for Exercise 13: Exercise 5.13

Author:Karen Morrison & Nick Hamshaw

Karen Morrison Mathematics Solutions for Exercise - Karen Morrison and Nick Hamshaw Solutions for Exercise 13: Exercise 5.13

Attempt the free practice questions from Exercise 13: Exercise 5.13 with hints and solutions to strengthen your understanding. Cambridge IGCSE® Mathematics Core and Extended Coursebook Second Edition solutions are prepared by Experienced Embibe Experts.