Question

ZFind the time taken by a truck to cover a distance of 120 m at the speed of 36 km/hr 12 sec 30 sec O 10 sec​

Answer 1

Answer:

Time taken by a truck is 12 seconds.

Step-by-step explanation:

To find : Time taken by the truck.

We have,

• Distance is 120 m.
• Speed is 36 km/hr.

Si unit of speed is m/s .

Conversion :

• 36 km/h = (36 × 5)/18 = 10 m/s .

We know,

• T = d/s

[Where, t is time , d is distance and s is speed of any object.]

Put values :

→ Time = 120/10

→ Time = 12

Thus,

Time taken by the truck is 12 seconds.

Answer 2

Given :-

Distance = 120 m

Speed = 36 km/h

To Find :-

Time taken

Solution :-

We know that

${\large{\boxed{\bf{\pink{\underline{\underline{\dag 1 \;km/h=\dfrac{5}{18}\;m/s}}}}}}}$

$\sf \implies 36\;km/h=36\times\dfrac{5}{18}$

$\sf \implies 36\;km/h=2\times5$

$\sf \implies 36\;km/h=10\;m/s$

${\large{\boxed{\bf{\pink{\underline{\underline{\dag Time=\dfrac{Distance}{Speed}}}}}}}}$

$\sf \implies Time=\dfrac{120}{10}$

$\sf \implies Time=12\;m/s$

Therefore

Option A is correct