Question

a train starting from stationary position and moving with uniform accelerated motion attains a speed of 20m/s in 10s.find its acceleration​

Answer 1

Answer:

a=2m/s^2

Explanation:

simply apply newton first equation of motion

v=u+at

train is starting from rest so u=0m/s

and t=10s v=20m/s

so putt the value in equation

20=0+a×10

a=20/10=2m/s^2

Answer 2

Given :

• Initial velocity (u) = 0 m/s
• Final velocity (v) = 20 m/s
• Time (t) = 10 seconds

To find :

• Acceleration (a)

According to the question,

We know that,

⟹ v = u + at

Where,

• v stands for Final velocity
• u stand for Initial velocity
• t stands for Time
• a stands for Acceleration

⟹ Substituting the values,

⟹ 20 = 0 + a × 10

⟹ 20 - 0 = 10a

⟹ 20 = 10a

⟹ 20 ÷ 10 = a

⟹ 2 = a

.°. The acceleration is 2 m/s²...

______________________________

More details :

Acceleration :

The rate of change of its velocity with time is known as acceleration.

• SI unit is m/s².
• Acceleration is a vector quantity.

Uniform acceleration :

A body has a uniform acceleration if its velocity changes at a uniform rate.

Non uniform acceleration :

A body has a non uniform acceleration if its velocity increases by unequal amounts in equal intervals of time.