P10 Equations Flashcards
Equation for Newton’s second law
Force = mass x acceleration
How to calculate weight with: weight, mass and gravitational strength
Weight = mass x gravitational field strength
Equation to calculate the force in car crashes and the time to stop
Time
Equation for momentum
Momentum = mass x velocity
Rule for momentum
It stays the same after the collision
Hookes law equation
F = spring constant ( K ) x extention ( x )
Hookes law
The extention of a spring is directly proportionate to the force applied
How do you calculate the change in momentum
Given: u, v, mass
Change in momentum = ( change in velocity: v - u ) x mass
Inertia definition
A tendancy to do nothing or remain unchanged
give an example of where impulse happens
When you hit a ball with a cricket bat, a force is applied in an amount of time and cause a change or tranfer of momentum in the ball
Equation for impulse
Change in momentum x time = force x change in velocity
🔺P x t = F x 🔺V
What is newton’s second law
Acceleration is directly proportionate to the force applied to the object
