Question

Initial velocity of a car is 36 km/hr. Find the distance after one min, if it goes with acceleration 2m/s².

[A] 4000 m.
[B] 4200 m.
[C] 4400 m.
[D] 4600 m.​

Answer 1

Answer:

• $\bf\pink{4200\:m}$

Explanation:

Given :-

• $\sf\red{ Initial \ velocity = 36km/hr = 10m/s}$
• $\sf\orange{ Acceleration = 2m/s^{2}}$
• $\sf\green{Time = 1\:min = 60\: sec}$

To Find :-

• $\sf\blue{Distance \: Travelled}$

Formula used :-

• $\sf\purple{s = ut + \dfrac{1}{2} at^{2}}$

Where,

• s = $\bold{Distance}$
• t = $\bold{Time }$
• u = $\bold{ Initial \ velocity}$
• a = $\bodl{Acceleration}$

Solution :-

$\Rightarrow\:\:\rm{s = 10(60) + \dfrac{1}{\cancel{2}} \times \cancel{2} \times (60)^{2}}$

$\Rightarrow\:\:\rm{s = 600+60\times 60}$

$\Rightarrow\:\:\rm{s = 600 + 3600}$

$\Rightarrow\:\:\rm{s = {\bf{\red{4200\:m}}}}$

• Hence, $\bf\green{(B)}$ is the correct option

Answer 2

B)4200m. Is the correct answer