A train stard from rest an accelarat unifromly at the rate of 5m/s for 5 second
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u = 0
a = 5 m/s square
time = 5 sec
to find final velocity
a = v - u / t
5 = v - 0 / 5
25 = v - 0
v = 25
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Correct Question :
A train starts from rest and accelerates uniformly at the rate of 5 m/s for 5 seconds. Find final velocity.
Answer :
Given :
- Initial velocity (u) = 0 (starting from rest)
- Time (t) = 5 seconds
- Acceleration (a) = 5 m/s
To find :
- Final velocity (v)
According to the question,
We will use newton's first equation of motion
➣ v = u + at
- v stands for Final velocity
- u stands for Initial velocity
- t stands for Time
- a stands for Acceleration
➣ v = 0 + 5 × 5
➣ v = 0 + 25
➣ v = 25 m/s
.°. The final velocity is 25 m/s...
Other equation of motion :
- v = u + at
- s = ut + ½ at²
- v² = u² + 2as
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