Dynamics Flashcards
What is Mass??
Mass is the property of the body that resists any change in a body’s state of rest and motion
What is Inertia?
Inertia is the ability of the body to resist any change in motion
What is Newtons Second law of motion?
The rate of change of linear momentum is directly proportional to the resultant force
What is momentum?
Momentum is the product of a body’s mass and velocity.
what is momentums formula?
p=mv
What is change in momentum?
Change in momentum = m(v-u)
What is rate of change of momentum?
rate of change of momentum = m(v-u)/t
can also be written as
Resultant Force= m(v-u)/t
What is Newtons First law?
A body will continue to remain in a state of rest of uniform velocity unless acted upon by an external resultant force
What is newtons 3rd Law?
If object A exerts a force on object B then object B will exert and opposite and equal reaction force on object A.
What is Weight?
Weight is the total force exerted by the gravitational field on a body and weight = mass*acceleration of freefall
What is principle of conservation of momentum?
For an isolated system, where no external forces are acting, the total momentum before collision is the total momentum after collision.
What are the two types of collisions and explain
Elastic Collision : in this collision momentum and kinetic energy both are conserved and the relative speed off approach= relative speed of seperation
Inelastic Collision: in this collision momentum is conserved but kinetic energy is not conserved and the relative speed of approach is not equal to relative speed of seperation.
