Saved Bookmarks
| 1. |
Amit and Sonu drives a car at the speed of 7.5 km/hr and 4 km/hr respectively from the same point. Amit drives towards the east and Sonu drives towards the north. What is the distance between them after 2 hours?1. 25 km2. 18 km3. 20 km4. 17 km5. 30 km |
|
Answer» Correct Answer - Option 4 : 17 km Formula Used : Speed = distance / time Calculations: Let the distance traveled by Sonu and Amit be DS and DA respectively. DA = ( speed × time )A = 7.5 × 2 = 15 km DS = ( speed × time )S = 4 × 2 = 8 km On applying Pythagoras theorem Distance between Amit and Sonu = √(152 + 82) ⇒ Distance between Amit and Sonu = √(152 + 82) ⇒ Distance between Amit and Sonu = 17 km ∴ The distance between them after 2 hours is 17 km. |
|