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level: Level 1 of Chapter 6: Momentum

Questions and Answers List

level questions: Level 1 of Chapter 6: Momentum

QuestionAnswer
What is the formula for finding the momentum of an objectmass x velocity
Momentum of an object is defined asthe product of the mass of the object and its velocity
What is the I unit for momentumkg m s^-1
Why is momentum a vector quantity?because it is a product of a vector quantity (velocity) and a scalar quantity (mass)
What does the principle of conservation of momentum state?That within a closed system, total momentum in any direction is constant
Give an example of inelastic collisionsWhen 2 objects collide, they may crumple and deform. Kinetic energy may disappear completely as they come to a halt.
Give an example of perfectly elastic collisionsWhen 2 objects collide, they may crumple and deform or they may spring apart, retaining all off their kinetic energy
Is momentum always conserved in all collisionsYes
Define forcesForces are interactions between bodies and that they change the motion of the body that they act on.
What is Newton's first law of motion in terms of momentumMomentum of an object remains the same unless the object experiences an external force
A statement of newton's second law is, in terms of momentumThe resultant force acting on an object is directly proportional to the rate of change of the linear momentum of the object
Newton's third law of motion in terms of momentum is?When 2 bodies interact, the forces they exert on each other are equal and opposite