science exam

momentum is equal to

• the force exerted by a moving object

• gravity

• the intertia of a moving object

• mass times the velocity of an object

the momentum after a collision of two objects is explained using the

• law of inertia

• law of momentum

• law of acceleration

• law of conservation of momentum

a car is moving with constant velocity. it has......

• increasing momentum

• decreasing momentum

• constant momentum

• no momentum at all

How does newtons third law relate to the concept of momentum in a collision

• momentum remains constant during a collision

• momentum is not affected by external forces

• momentum changes only if the masses involved are equal

• momentum changes due to unbalanced forces

which of the following statements is true regarding momentum

• momentum depends only on an objects mass

• momentum is a vector quantity

• momentum is conserved only in elastic collisons

• momentum is measured in joules

what happens to momentum of an object if its velocity doubles

• momentum doubles

• momentum quadruples

• momentum halves

• momentum remains the same

what does the conservation of momentum state

• momentum increases in a closed system

• momentum decreases in a closed system

• total momentum remains constant in a closed system

• momentum depends on external forces

momentum is

• a scalar quantity

• the product of an objects mass and acceleration

• conserved only in elastic collisions

• the quantity of motion an object possesses

momentum has no direction

• true

• false

an airplane is slowing down and flying lower as it prepares to land at an airport. which statement below describes the energy of the airplane

• the kinetic energy decreases and the potential energy decreases

• the kinetic energy decreases and the potential energy increases

• the kinetic energy increases and the potential energy decreases

• the kinetic energy increases and the potential energy increases