#### Answer

At points A and B, the velocity is 6.7 m/s.
At point C, the velocity is zero.
At points D and E and F, the velocity is -40 m/s.
At point G, the velocity is zero.

#### Work Step by Step

The instantaneous velocity is the slope of the tangent to the x versus t graph. This is measured from the graph. The sign of the slope indicates the direction of the velocity.