To solve this problem, we can use the relationship between the angular and linear speed for this particular movement (rotation). As the speed of the current is tangent to the trajectory of the wheel we can define as follows:

$v= \omega r=18 \frac{rev}{min} \times \frac{1min}{60s}\times 4 ft\\v= 1.2 \frac{ft}{s}= 72 \frac{ft}{min}$

The speed of the current is 72 ft/min

5 0

3 years ago

As the Moon revolves around the Earth, it also rotates on its axis. Why is it that the same side of the Moon is always visible f

Aleksandr [31]

The answer is accually D. The speed of the Moon's rotation keeps the same side always facing Earth.

5 0

3 years ago

If an 8000 kg truck and and a 2000 kg car are moving with the same velocity, which one will have more kinetic energy? why?

sattari [20]

Answer: sure the truck with 8000 kg mass

Explanation: use the rule: ke=1/2mv^2

4 0

3 years ago