Question

A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car during the trip? A. 4 km/hour B. 960 km/hour C. 60 km/hour

Answer 1

Answer:

Average speed is 60 km/hour

Explanation:

When we need to calculate average speed, we use this equation:

$V = \frac{x_{f} - x_{o}}{t_{f} - t_{o}}$

Where:   $x_{o} = 0 km$   position at the beginning

              $x_{f} = 240 km$   at the end

              $t_{o} = 0 hours$

              $t_{f} = 4 hours$

Then:     $V = \frac{240 km - 0 km}{4 hours - 0 hours}$

              $V = \frac{240 km}{4 hours}$

Finally    V = 60 km/hour