You are riding a roller coaster. Your velocity is -17 per second. What is your speed? Give the units
17 whatevers/second (You did not say whatever)
To find the speed, we need to consider the magnitude of the velocity, as speed only takes into account the magnitude and not the direction.
The velocity given as -17 per second implies that the roller coaster is moving in the negative direction at a rate of 17 units per second. However, since speed is always positive, we need to take the absolute value of the velocity.
Therefore, the speed of the roller coaster would be 17 units per second (written as 17 m/s, assuming the units are meters per second in this case).