Question

how long will a motorcycle take travelling at 45 km/hr to cross a bridge 2025m long?​

Answer 1

$\green{Time={\frac{Distance}{Speed}}}$

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GIVEN

Speed = 45 km/hr

Distance = 2025m = 2.025 km

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Using the formula, we get:-

«» Time = 2.025/45

«» Time = 0.045hr

«»Time = 2.7 minutes

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Answer 2

Step-by-step explanation:

GIVEN:-

=>A motorcycle is travelling at 45km/hr.

=> Bridge is 2025m long.

TO FIND:-

=>The time taken by the motorcycle to cross the bridge.

UNDERSTANDING THE CONCEPT:-

According to the question,

=>We know that time taken can be calculated by the total distance covered divided by the speed required.

=>So, after converting meter into kilometre, Use the given formula to find the time taken.

$\huge\bf\underline{Answer}$

Speed = 45km/hr

Distance= 2025m

=>convert it into kilometre,

2025m => 2.025km

$\bf{t = \dfrac{d}{s} }$

$\bf{t = \dfrac{2.025}{45} }$

$\bf{t = 0.045hrs}$

$\bf{t = 2.7mins}$

=>Therefore,the time taken by the motorcycle to cross the bridge is 2.7 minutes.