Question

Лошадь тянет телегу, прилагая усилие 350 Н, и совершает за 1 мин работу в 42 кДж. С какой скоростью движется лошадь???

Answer 1

А=FS
42000=350*s
s=120м
Находим u:
V=s:t
v=120:60=2м
Ответ: 2м

Answer 2

Calculation of Horse's Speed

To calculate the speed at which the horse is moving, we can use the formula:

Speed = Work / Time

Given that the horse exerts a force of 350 N and performs work of 42 kJ in 1 minute, we can convert the work from kilojoules to joules:

Work = 42 kJ * 1000 = 42,000 J

Now we can calculate the speed:

Speed = 42,000 J / 60 s = 700 J/s

Therefore, the horse is moving at a speed of 700 meters per second.

Please note that the given information does not specify the mass of the horse or the trolley, so we assume that the mass is not relevant to the calculation of speed in this context.