Question

ПОМОГИТЕ!!!!!!!!!!!!!! Трамвай пройшов перші 100 м із середньою швидкістю 5м/с ,а наступні 600 м - із середньою швидкістю 10м/с. Визначте середню швидкість трамвая на всьому шляху.

Answer 1

s1=100 м    s2=600 м   v1=5 м/с    v2=10 м/с   vcp=?

vcp=(s1+s2)/(t1+t2)

t1=s1/v1=100/5=20 c

t2=s2/v2=600/10=60 c

vcp=(100+600)/(20+60)=8.75 м/с

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Answer 2

Calculation of Average Speed

To calculate the average speed of the tram over the entire distance, we need to consider the total time taken and the total distance covered.

The tram first travels a distance of 100 meters with an average speed of 5 m/s. To calculate the time taken for this part of the journey, we can use the formula:

Time = Distance / Speed

For the first part of the journey: Distance = 100 meters Speed = 5 m/s

Using the formula, we can calculate the time taken for the first part of the journey:

Time = 100 meters / 5 m/s = 20 seconds

Next, the tram travels a distance of 600 meters with an average speed of 10 m/s. We can calculate the time taken for this part of the journey using the same formula:

For the second part of the journey: Distance = 600 meters Speed = 10 m/s

Using the formula, we can calculate the time taken for the second part of the journey:

Time = 600 meters / 10 m/s = 60 seconds

Now, to calculate the average speed of the tram over the entire distance, we need to consider the total time taken and the total distance covered.

Total distance = 100 meters + 600 meters = 700 meters Total time = 20 seconds + 60 seconds = 80 seconds

Using the formula for average speed:

Average Speed = Total Distance / Total Time

Average Speed = 700 meters / 80 seconds = 8.75 m/s

Therefore, the average speed of the tram over the entire distance is 8.75 m/s.