Question

PLEASE HELP. A train is slowing down with an average acceleration of -5.0 m/s2. ( negative sign shows deceleration ). If it’s an initial velocity is 50 mi./s how far does a travel in 6 seconds?

Answer 1

Answer: The train traveled 210 miles in 6 seconds of time duration.

Explanation:

The initial velocity of the train,u = 50 mile/s

Acceleration of the train ,a = $-5.0 m/s^2$

Duration of time ,t = 6 seconds

Using second equation of motion :

$s=ut+\frac{1}{2}at^2$

$s=50 mile/s\times 6 s+\frac{1}{2}(-5.0 m/s^2)(6s)^2=210 miles$

The train traveled 210 miles in 6 seconds of time duration.

Answer 2

normal trains go about 45-55 MPH