Question

A freight train traveling with a velocity of -4.0 m/s begins backing into a train yard. If the train's average acceleration is -0.27 m/s/s, what is the train's velocity after 17 seconds?

Can someone tell me which formula to use for this?

Answer 1

vf=vi + at

Answer 2

Thanks. :)

Answer 3

[AI-generated answer — Explain Bot]

To solve this problem, we can use the equation of motion that relates velocity, acceleration, and time. The equation is:

velocity = initial velocity + (acceleration * time)

Given that the initial velocity of the train is -4.0 m/s, the acceleration is -0.27 m/s/s, and the time is 17 seconds, we can substitute these values into the equation to find the final velocity.

Final velocity = -4.0 m/s + (-0.27 m/s/s * 17 s)

Let's calculate the final velocity.