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?
vf=vi + at
Thanks. :)
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.