SI units/symbols
What is the SI unit for momentum?
kg(m/s)
what is the equation for momentum
P=m x v
Why would you want to have your momentum slow down over a longer time
so there is less force
What is momentum?
quantity defined as the product of the mass and velocity of an object
What does S equal
Arc length
What is the SI unit for angular speed?
rad/s
what is the equation for elastic collisions?
ma vai+mbvbi=mavaf+mbvbf
Why does the outside of a circle move faster?
it is moving the the same amount of degrees but it is a further distance.
What variable represents momentum?
p
How many radians are in a circle?
6.28 rads or 2pi rads
What is the SI unit of angular acceleration?
rad/s^2
What is the equation for angular speed?
𝜔ave = Δ𝛳/Δt
If two people push off each other on ice skates with different forces who has more momentum?
it is the same
What is the momentum of and object with zero velocity?
zero
Is angular speed the same for all parts if the circle?
yes
What is the symbol for centripetal force?
Fc
What is the equation for impulse momentum?
Δp=FΔt
Why does light not escape a black hole?
Because the escape velocity is faster than the speed of light
The idea that momentum is always constant is known as this.
Law of Conservation of Momentum
𝜔 (omega)
What is the symbol for angular acceleration
𝛼
What is the equation to calculate leaving orbit?
vt = √(Gmp/r)
Why do they make cannons heavier?
Because it takes more force to move, meaning it stays still easier.
What are the three types of collisions?
inelastic, elastic, and somewhat inelastic
This is the tendency of an object to resist a change in its rotational speed.
rotational inertia.