Question

question 1-12 a car traveled a distance of 100 kilometers in 1 hour. the car stopped for 1 hour and then traveled an additional 140 kilometers in 2 hours. what was the average speed of the car in kilometers per hour over the course of the entire trip, including when the car was stopped? 60 km/h 80 km/h 85 km/h 120 km/h

Explanation:

Step1: Calculate total distance

The car first traveled 100 km, then stopped for 1 hour, and then traveled 140 km. So the total distance $d = 100 + 140=240$ km.

Step2: Calculate total time

The car traveled for 1 hour, stopped for 1 hour, and then traveled for 2 hours. So the total time $t=1 + 1+2 = 4$ hours.

Step3: Calculate average - speed

The formula for average speed is $v=\frac{d}{t}$. Substituting $d = 240$ km and $t = 4$ hours, we get $v=\frac{240}{4}=60$ km/h.

Answer:

60 km/h