Question 38 (iii) - CBSE Class 10 Sample Paper for 2023 Boards - Maths Standard - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 13, 2024 by Teachoo

What is the speed of the plane in km/hr.

Sample paper Maths Class 10 - 2023 Boards - Standard.jpg

Next: Practice Questions CBSE - Maths Class 10 (2023 Boards) → You saved atleast 2 minutes of distracting ads by going ad-free. Thank you :)

You saved atleast 2 minutes by viewing the ad-free version of this page. Thank you for being a part of Teachoo Black.

Transcript

Question 38 (iii) What is the speed of the plane in km/hr. If Distance BC is found Speed of airplane = (𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑡𝑟𝑎𝑣𝑒𝑙𝑙𝑒𝑑 𝑖𝑛 30 𝑠𝑒𝑐𝑜𝑛𝑑𝑠)/(30 𝑠𝑒𝑐𝑜𝑛𝑑𝑠) = 6000/30 m/s = 200 m/s = 200 × (1 𝑚𝑒𝑡𝑒𝑟)/(1 𝑠𝑒𝑐𝑜𝑛𝑑) = 200 × (𝟏/𝟏𝟎𝟎𝟎 𝒌𝒎)/(𝟏/𝟑𝟔𝟎𝟎 𝒉𝒐𝒖𝒓𝒔) = 200 × 1/1000 ×3600/1 km/hr = 720 km/hr If Distance BY is found Speed of airplane = (𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑡𝑟𝑎𝑣𝑒𝑙𝑙𝑒𝑑 𝑖𝑛 15(√3−1) 𝑠𝑒𝑐𝑜𝑛𝑑𝑠)/(15(√3−1) 𝑠𝑒𝑐𝑜𝑛𝑑𝑠) = (3000(√3 − 1))/(15(√3 − 1)) m/s = 200 m/s = 200 × (1 𝑚𝑒𝑡𝑒𝑟)/(1 𝑠𝑒𝑐𝑜𝑛𝑑) = 200 × (𝟏/𝟏𝟎𝟎𝟎 𝒌𝒎)/(𝟏/𝟑𝟔𝟎𝟎 𝒉𝒐𝒖𝒓𝒔) = 200 × 1/1000 ×3600/1 km/hr = 720 km/hr

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular