November 28, 2015

Homework Help: Physics

Posted by Danny on Friday, June 7, 2013 at 10:57pm.

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters.

A) What is the acceleration? = m/s^2
B) What is its speed after deceleration? = km/h

Initial velocity (u) = 110km/h
Time (t) = 20s
Distance = 450m
Using this formula s = ut + 1/2 at^2

I need some help. Thank you.

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