Question

Во сколько раз отличается ускорение мотоциклиста скорость которого увеличилась с 72 км ч до 90 км ч и велосипедиста который за тот же промежуток времени из состояния покоя достиг скорости 9 км ч?

Answer 1

A1=9/t 
a2=90-72/t=18/t
a2 больше а1 в 2 раза

Answer 2

Calculation of Acceleration

To calculate the difference in acceleration between a motorcyclist and a cyclist, we need to use the formula for acceleration:

Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t)

Let's calculate the acceleration for both the motorcyclist and the cyclist.

For the motorcyclist: - Initial velocity (u) = 72 km/h - Final velocity (v) = 90 km/h

For the cyclist: - Initial velocity (u) = 0 km/h (starting from rest) - Final velocity (v) = 9 km/h

Now, let's calculate the acceleration for both cases.

For the motorcyclist: Acceleration (a) = (90 km/h - 72 km/h) / t

For the cyclist: Acceleration (a) = (9 km/h - 0 km/h) / t

Unfortunately, the provided search results do not contain the necessary information to determine the value of time (t). Therefore, we cannot calculate the exact difference in acceleration between the motorcyclist and the cyclist.