Question

For one hour, you travel east in your car covering 10.0 km. Then, travel south 10.0 km in 2 hours. You would tell your friends that your average speed was:

a) 5 km/h
b) 20 km/h
c) 7.5 km/h
d) 10 km/h

Answer 1

Now, to find the average speed, we divide the total distance traveled by the total time taken. So, average speed = 20.0 km / 3 hours = 6.6667 km/h (rounded to four decimal places). The average speed for the entire trip is 6.6667 km/h.

Step-by-step explanation:

To find the average speed, we need to calculate the total distance traveled and the total time taken. In this case, you traveled east for 10.0 km in 1 hour and then south for 10.0 km in 2 hours.

The total distance traveled is 10.0 km + 10.0 km = 20.0 km.

The total time taken is 1 hour + 2 hours = 3 hours.

Now, to find the average speed, we divide the total distance traveled by the total time taken. So, average speed = 20.0 km / 3 hours = 6.6667 km/h (rounded to four decimal places).

Therefore, the correct answer is 6.6667 km/h.