Shortcut Trick Speed = 0.5 m/s Time = 8 minutes = 8 × 60 = 480 seconds Distance = Speed × Time = 0.5 × 480 = 240 m ∴ The correct answer is 240 m. Alternate Method Given: ⇒ Speed of the person = 0.5 m/s ⇒ Time taken = 8 minutes Formula Used: ⇒ Distance = Speed × Time ⇒ 1 minute = 60 seconds Calculations: ⇒ First, convert Time from minutes to seconds: ⇒ Time = 8 × 60 = 480 seconds ⇒ Now, calculate the Distance: ⇒ Distance = 0.5 m/s × 480 s ⇒ Distance = 240 m ∴ The correct answer is 240 m. Related Concepts: Unit Conversion To convert speed from km/hr to m/s, multiply by 5/18. To convert m/s to km/hr, multiply by 18/5. Average Speed Average Speed = Total Distance ÷ Total Time. For two equal distances at speeds x and y, Average Speed = 2xy ÷ (x + y). Relative Speed If two objects move in the same direction, Relative Speed = S_(1) − S_(2). If they move in opposite directions, Relative Speed = S_(1) + S_(2).