Answer:
atmospheres are equivalent to millimeters of mercury.
Explanation:
According to current SI unit conversions, 1 atmosphere is equal to 760 millimeters of mercury. The current pressure is determined by simple rule of three:
atmospheres are equivalent to millimeters of mercury.
P=mv
0.25v=0.05*500
v=100 m/s
Pretty fast...
- Static friction: when an object is not moving
- Kinetic friction: if an object is moving
- Rolling friction: when there is rolling (wheel,..)