A train starts from rest and travels for 5.0 s with a uniform acceleration of 1.5 m/s2. What is the final velocity of the train?

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shirleywashington shirleywashington · Answer 1 · 2019-06-17T13:10:12+02:00

Answer:

Final speed of the train is 7.5 m/s

Explanation:

It is given that,

Uniform acceleration of the train is, a = 1.5 m/s²

It starts from rest and travels for 5.0 s. We have to find the final velocity of the train. By using first equation of motion as :

[tex]v=u+at[/tex]

Here, train starts from rest so, u = 0

[tex]v=0+1.5\ m/s^2\times 5\ s[/tex]

v = 7.5 m/s

So, the final velocity of the train is 7.5 m/s. Hence, this is the required solution.

rocioo rocioo · Answer 2 · 2019-11-06T03:41:15+01:00

Answer:

[tex]7.5m/s[/tex]

Explanation:

We use the formula to find the final velocity for the movement with constant acceleration:

[tex]V_{f}=V_{i}+at[/tex]

where

[tex]V_{f}[/tex] is the final velocity of the train

[tex]V_{i}[/tex] is the initial velocity of the train, since it starts from rest [tex]V_{i}=0[/tex]

[tex]a[/tex] is the acceleration, [tex]a=1.5m/s^2[/tex]

and [tex]t[/tex] is the interval of time, [tex]t=5s[/tex]

So, replacing the values in the formula we get:

[tex]V_{f}=0+(1.5m/s^2)(5s)[/tex]

[tex]V_{f}=7.5m/s[/tex]

The final velocity of the train is [tex]7.5m/s[/tex]