Question

по озеру буксир тянет баржу со скоростью 9 км/ч. Длина буксира с баржей 110м. За какое время буксир с баржей пройдет мимо теплохода, стоящего у пристани, если длина теплохода 50 м?

Answer 1

9 км/ч = 2,5 м/с
     S       (110+50)      160
t= ---- =    ----------- = --------- = 64 (сек) - за такое время буксир с баржей пройдет
     V           2.5          2.5                          мимо теплохода

Answer 2

Calculation of Time for the Tugboat to Pass the Steamboat

To calculate the time it takes for the tugboat with the barge to pass the steamboat, we need to consider the relative speeds and lengths of the vessels involved.

Given information: - Speed of the tugboat with the barge: 9 km/h- Length of the tugboat with the barge: 110 m- Length of the steamboat: 50 m

To calculate the time, we can use the formula:

Time = Distance / Speed

The distance the tugboat with the barge needs to cover to pass the steamboat is the sum of their lengths:

Distance = Length of the tugboat with the barge + Length of the steamboat

Substituting the given values:

Distance = 110 m + 50 m = 160 m

Now, we can calculate the time:

Time = Distance / Speed = 160 m / (9 km/h)

To ensure consistent units, we need to convert the speed from kilometers per hour to meters per hour:

Speed = 9 km/h * (1000 m/km) = 9000 m/h

Substituting the values:

Time = 160 m / 9000 m/h

Simplifying:

Time = 0.0178 hours

To convert the time to minutes, we multiply by 60:

Time = 0.0178 hours * 60 minutes/hour

Simplifying:

Time = 1.07 minutes

Therefore, the tugboat with the barge will take approximately 1.07 minutes to pass the steamboat.

Please note that this calculation assumes constant speeds and does not account for any external factors that may affect the vessels' movements.