Physics

To calculate the average speed of the car for the entire 1-hour journey, we need to find the total distance traveled and the total time taken.

 

Calculate total distance:

For the first segment (60 km/h for 0.5 hours):

Distance₁ = Speed × Time = 60km/h × 0.5h = 30km

 

For the second segment (90 km/h for 0.5 hours):

Distance₂ = Speed × Time = 90km/h × 0.5h = 45km

 

Total Distance = Distance₁ + Distance₂ = 30km + 45km =75km

 

Calculate total time:

Convert time to hours:

(for both segments)

Total Time = 0.5h + 0.5h = 1h

 

Then, calculate average speed:

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