Question

Автомобиль который движется равномерно и прямолинейно со скоростью 54км/ч прошел за время 10сек такой же путь как и мотоциклист за время 12сек. Чему равна скорость мотоциклиста если считать его движение так же равномерным и прямолинейным

Answer 1

Найдем путь сначала:

S = vt  = 15*10 = 150 м   (54 км/ч = 15 м/с)

Тогда скорость мотоциклиста:

V = 150/12 = 12,5 м/с. = 45 км/ч.

Ответ: 45 км/ч.

Answer 2

54км/ч=54000км/3600сек=15м/с 15м/с*10сек=150м-путь пройденный автомобилем 150м:12сек=12,5м/с-скорость мотоциклиста

Answer 3

Problem Analysis

We are given that a car is moving uniformly and in a straight line with a speed of 54 km/h. It takes 10 seconds for the car to travel a certain distance. We are also told that a motorcyclist covers the same distance in 12 seconds. We need to find the speed of the motorcyclist assuming their motion is also uniform and in a straight line.

Solution

To find the speed of the motorcyclist, we can use the formula:

Speed = Distance / Time

Since the car and the motorcyclist cover the same distance, we can equate their respective speed-distance-time relationships:

Car's Speed = Motorcyclist's Speed

Car's Distance / Car's Time = Motorcyclist's Distance / Motorcyclist's Time

Substituting the given values:

54 km/h / 10 s = Motorcyclist's Distance / 12 s

To find the motorcyclist's speed, we need to calculate the distance covered by the motorcyclist in 12 seconds.

Calculation

To calculate the distance covered by the motorcyclist, we can use the formula:

Distance = Speed * Time

Substituting the given values:

Motorcyclist's Distance = Motorcyclist's Speed * 12 s

Now we can substitute this value back into the equation:

54 km/h / 10 s = (Motorcyclist's Speed * 12 s) / 12 s

Simplifying the equation:

54 km/h = Motorcyclist's Speed

Therefore, the speed of the motorcyclist is 54 km/h.

Answer

The speed of the motorcyclist, assuming their motion is also uniform and in a straight line, is 54 km/h.