Question

A boy is walking along a road with a velocity 1.5km/hr taken to cover the distance of 820m.
1.Express this velocity in m/s.
2.Find the time taken to cover the distance of 820m

Answer 1

$\Large{\underline{\underline{\bf{GivEn:-}}}}$

• Velocity of boy = 1.5 km/hr
• Distance covered by boy = 820 m

$\Large{\underline{\underline{\bf{To \: FiNd:-}}}}$

• What is the velocity of boy in m/s and time taken by the boy ?

$\Large{\underline{\underline{\bf{SoLuTion:-}}}}$

❶ Velocity of boy is 1.5 km/hr

Change the velocity in m/s:-

➸ v = 1.5 $\times$ $\sf{\dfrac{5}{18}}$

➸ v = $\sf{\cancel\dfrac{7.5}{18}}$

❮ VELOCITY = 0.416 m/s ❯

❝ The velocity of boy is 0.416 m/s ❞

❷ Distance is 820 m and velocity is 0.416 m/s

To find the time taken, we use the formula:-

$\large{\boxed{\bf{\star \: TIME = \dfrac{DISTANCE}{SPEED} \: \star}}}$

According to question:-

➸ T = $\sf{\cancel\dfrac{820}{0.416}}$

❮ TIME = 1971.15 sec ❯

❝ Hence, the Time taken by the boy is 1971.15 seconds ❞

______________________

Answer 2

Given:-

Velocity of the boy = 1.5km/hr

Distance covered by the boy =820m

To Find:-

1.Express this velocity in m/s.

2.Find the time taken to cover the distance of 820m.

Solution:-

1. Velocity of boy is 1.5 km/hr.

Change the velocity in m/s.

V = 1.5× 5/18

V = 7.5/18

V = 0.416 m/s.