A body of mass 3kgs moving at 4m/s collidea with a body of mass 5kgs moving at 2m/s in the same direction. what is tge common velocity of bodies if they stick together on collision?

If a clock aboard a space ship traveling at 0.900 c of the speed of light relative to earth chimes once at the beginning of the hour and again when it reads one hour later, how much time would an observer on earth say elapsed between the two chimes?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

It can take some of those large , industrial vehicles up to feet to stop when traveling only 60 mph, and therefore , you shoukd be mindful to not be jn the traffic right in front of them a. 100 feet b. 200 feet c. 335 feet d. 425 feet