Chapter 4: Dynamics Flashcards
What is mass?
The property of a body which resists change in motion (inertia)
What is linear momentum?
The product of a body’s mass and velocity
State Newton’s First Law of Motion
In the absence of resultant force acting on it, a body at rest will remain at rest and a body in motion will continue in motion at constant velocity
State Newton’s Second Law of Motion
The resultant force acting on a body is proportional to the rate of change of momentum of a body, and the momentum change takes place in the direction of the resultant force
What is impulse of a force?
The product of the average force and the time during which it acts (F x t)
State Newton’s Third Law of Motion
When a body A exerts a force on a body B, body B will exert a force of equal magnitude but opposite in direction on body A
State the principle of conservation of linear momentum
When bodies in a system interact, the total momentum remains constant provided no external force acts on the system
What is an elastic collision?
A collision where kinetic energy is conserved
What is a inelastic collision?
A collision where kinetic energy is not conserved
What is a completely inelastic collision?
A collision where the bodies join together after collision
What is a superelastic collision?
A collision where kinetic energy is gained
inertia
Inertia is the tendency of a body to stay in a state of rest or uniform motion
