Dynamics Flashcards
Momentum formula (p)
P=mv momentum= mass x velocity
what is the definition of liner momentum
Linear momentum is defined as the product of the mass and velocity of the body
What is the formula for change in momentum
Δp = m(Δv) or change in p = p final - p initial
What is Newton’s first law of motion
Newton’s first law of motion states that in the absence of resultant force acting on it, a body will remain at rest and a body in motion will continue in motion at constant velocity
What is Newton’s second law of motion
Newton’s second law of motion states that the rate of change of momentum of a body is proportional to the resultant force which acts on the body, and the momentum change takes place in the direction of the resultant force
Force= change in momentum/time
Force= change in momentum/time
what is Newtons third law
newtons third law states that every force exerts an equal in magnitude but opposite in direction to that force (action reaction pair)
conditions for action reaction pair
equal in magnitude, opposite in direction, of the same type and act on different bodies
what do we call a system of two colliding objects moving together after separation
perfectly inelastic collision
formula for conservation of momentum
m1u1+m2u2=m1v1+m2v2
what is conserved for a perfectly elastic collision
momentum and kinetic energy
what is the formula used for elastic collisions
u1-u2=v2-v1
what are the 3 SUVAT formulas
v= u + at
v^2= u^2 + 2as
s= ut + 1/2 at^2
does constant force = constant acceleration = constant speed
no bc acceleration is the rate of change of velocity over time, hence if acceleration is constant, it means that it velocity is constantly changing over time and not constant velocity
definition of acceleration
acceleration is that rate of change of velocity over time
