Until a train is a safe distance from the station it must travel at 5m/s. once the train is on open track it can speed up to 45m/s. if it takes the train 8 seconds to reach 45m/s what is the acceleration of the train ?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

How to tell if a molecule is polar or nonpolar with electronegativity

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.