Question

A train starting from railway station attains a speed of 21m/s in one minute. Find the acceleration
.

Answer 1

Answer:

0.35m/s^2

Explanation:

u=0m/s

v=21m/s

t=60s

a=(v-u)/t

=(21-0)/60

=21/60

=0.35m/s^2

Answer 2

$\huge\sf{Answer:}$

☆ Given:

⇏ A train starting from railway station attains a speed of 21m/s in one minute.

☆ Find:

⇏ Find the acceleration.

☆ According to the question:

⇏ Acceleration = ?

⇏ Initial velocity = 0 m/s

⇏ Final velocity = 21 m/s

⇏ Time = 1 min.

☆ Using formula:

$\sf Acceleration = \dfrac{Final \: velocity - Initial \: velocity}{Time \: taken}$

☆ Know terms:

⇏ Acceleration = (A)

⇏ Final velocity = (v)

⇏ Initial velocity = (u)

⇏ Time = (t)

☆ Calculations:

⇏ $\sf A = \dfrac{21 - 0}{60}$

⇏ $\sf A = \dfrac{21}{60}$

⇏ ${\sf{\underline{\boxed{\sf{A = 0.35 m/s^2}}}}}$

Therefore, 0.35 m/s² is Acceleration.