If we describe the motion of a train as 110 km/h to the south, we are describing the train's a. velocity b. acceleration c. average speed

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a. a piece of paper b. a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block