# Answer to Question #827 in Mechanics | Relativity for Maddie

Question #827

An object initially at rest accelerates uniformly at 5 m/sec west decelerates uniformly at 4.0 m/sec^2 for 2.0 sec. What is the displacement of this object?

Expert's answer

Let's write the equations of the motion:

h = h

For our case:

h = 5 * 2 - 4*2

The displacement is 2 m.

h = h

_{0}+v_{0}t +at^{2}/2;For our case:

h = 5 * 2 - 4*2

^{2}/2 = 2 m.The displacement is 2 m.

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