MOMENTUM and COLLISIONS Flashcards
1
Q
What is the principle of conservation of momentum
A
the total momentum before a collision is equal to the total momentum after the collision, provided no outside forces are involved
2
Q
calculate momentum
A
p=mv
3
Q
is momentum vector or scalar
A
vector
4
Q
define impulse
A
is the product of a force F and the time it takes to act.
5
Q
calculate impulse
A
fxt
6
Q
calculate force using mass and velocity and time
A
F=mv/t
7
Q
What is an elastic collision
A
is one in which the momentum and the kinetic energy are conserved- no energy is transferred to other forms such as heat or sound
8
Q
what is an inelastic collision
A
means that momentum is conserved but some of the kinetic is transferred to other forms of energy in the collision
9
Q
Calculate change in momentum
A
=F Δt
