How do you find final speed of two objects that sticked together after colliding on an frictionless inclined plane?

What is the measurement of how fast an object moves relative to a reference point?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force