A cart of mass m moves to the right on a frictionless track at speed V. The cart collides and sticks to another cart moving to the right at speed V2 with mass 3m.
Which of the following quantities are conserved during the collision?
Choose 1
А
Momentum is conserved
B
Kinetic energy is conserved
Both momentum and kinetic energy are conserved

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.