A railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity?

A. 2.0 m/s

B. 0.5 m/s

C. 60,000 kg-m/s

D. 1.0 m/s

What is an electric circuit? A system of insulating elements designed to control the path of electric current for a particular purpose. A system of conducting elements designed to control the path of electric current for a particular purpose

Explain what happens to the total mass of a mixture when it is separated?

A 200-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Identify two factors you must know to describe the motion of an object along a straight line

An archer pulls back the string of a bow to release an arrow at a target. Which kind of potential energy is transformed to cause the motion of the arrow

a box has mass 60 kg and it is lying on the earth surface occupying an area of 6000 CM square then the pressure exerted by it on the ground is equal to

A 16.0 kg canoe moving to the left at 12.5 m/s makes an elastic head-on collision with a 14.0 kg raft moving to the right at 16.0 m/s. After the collision, the raft moves to the left at 14.4 m/s. Disregard any effects of the water.

How many significant figures does the number 91010.0 have?

Convert 9.75 millimeters to centimeters.

A 4357 kg roller coaster car starts from rest at the top of a 36.5 m high track. determine the speed of the car at the top of a loop that is 10.8 m high