Question

A car initially traveling at 8.0 meters per second doubles its speed while traveling in a northeast direction. Students used a table to record the initial and final conditions for speed and velocity. Which table is correct? A Initial and Final Conditions Speed Velocity Initial 8.0 m/s 8.0 m/s northeast Final 16.0 m/s 16.0 m/s northeast B Initial and Final Conditions Speed Velocity Initial 8.0 m/s northeast 8.0 m/s Final 16.0 m/s northeast 16.0 m/s C Initial and Final Conditions Speed Velocity Initial 8.0 m/s 0.0 m/s northeast Final 16.0 m/s 0.5 m/s northeast D Initial and Final Conditions Speed Velocity Initial 8.0 m/s northeast 8.0 m/s northeast Final 16.0 m/s northeast 16.0 m/s northeast

Answer 1

Table B correctly records the initial and final conditions for speed and velocity as the car doubles its speed while traveling northeast, maintaining consistency between the scalar speed and vector velocity quantities.

The correct table is Option B:

B. **Initial and Final Conditions**

- **Speed:** Initial 8.0 m/s northeast, Final 16.0 m/s northeast

- **Velocity:** Initial 8.0 m/s northeast, Final 16.0 m/s northeast

This choice accurately reflects the scenario where the car initially travels at 8.0 m/s northeast and doubles its speed to 16.0 m/s while maintaining a northeast direction. In physics, speed is a scalar quantity, representing the magnitude of velocity. Velocity, on the other hand, is a vector quantity that includes both speed and direction. The given table appropriately differentiates between speed and velocity, providing consistent values for both initial and final conditions.