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_{0} +v_{0} t +at^{2}/2;

For our case:

h = 5 * 2 - 4*2^{2}/2 = 2 m.

The displacement is 2 m.

h = h

For our case:

h = 5 * 2 - 4*2

The displacement is 2 m.

## Comments

## Leave a comment