Question

От одного каменя у разных направленияхпо дну речки одновременно поповзли два раки.Скорасть одново рака 40см/м,а второво-на 16см/м менше.Какое растояние будет между раками через 12 м.

Answer 1

40см/м-16см/м=24см/м-скорость второго рака

40+24=64см/м-скорость удаления

64см/мХ1200см=76800см или 768см

 

 

 

 

Answer 2

Calculating the Distance Between Two Crabs

To calculate the distance between the two crabs, we can use the formula:

Distance = Speed * Time

First, let's calculate the time it takes for the crabs to be 12 meters apart.

The speed of the first crab is 40 cm/s, and the speed of the second crab is 16 cm/s less than the first crab.

Calculating the Time

To find the time it takes for the crabs to be 12 meters apart, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the difference in speed between the two crabs.

Relative Speed = Speed of the first crab - Speed of the second crab

Let's calculate the relative speed and then use it to find the time it takes for the crabs to be 12 meters apart.

Relative Speed Calculation

Relative Speed = 40 cm/s - (40 cm/s - 16 cm/s) Relative Speed = 16 cm/s

Time Calculation

Time = 12 m / (16 cm/s) Time = 12 m / (0.16 m/s) Time = 75 seconds

Now that we have the time, we can calculate the distance between the crabs at that time.

Calculating the Distance

Distance = Speed * Time

For the first crab: Distance1 = 40 cm/s * 75 s Distance1 = 3000 cm

For the second crab: Distance2 = (40 cm/s - 16 cm/s) * 75 s Distance2 = 24 cm/s * 75 s Distance2 = 1800 cm

Final Result

The distance between the crabs after 12 meters will be the difference between their distances from the starting point, which is: Distance = Distance1 - Distance2 Distance = 3000 cm - 1800 cm Distance = 1200 cm