O pol deviatej ráno vyšla kolóna vozidiel rýchlosťou 20 km/h. O 9.00 za ňou vyšlo osobné auto rýchlosťou 60 km/h. Koľko km prejde auto, kým dobehne kolónu? O ktorej hodine to bude?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Which changes of state do the labels represent? a: b: c:

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear