Mechanics Flashcards
Speed is measured in
Ms-1
What is a force and what is the unit for force
A push or a pull or a twist. Newtons
What force is going up
Support is keeping it stable
What force is going down
Gravity is pushing object down
What force is going left
Friction is acting against the movement of object
What force is going right
Thrust is acting behind object
The formula for force
F= Ma
Energy law
Energy cannot be created or destroyed, you can only change it from one form to another
What is the equation for speed
S= d/t
What is the formula for gravitational potential energy
GPE=m x g x h
Measured in joules
What is the formula for kinetic energy
Ek = 1/2 mv2
Measured in joules
What is gravitational energy
Energy found high up like on a mountain
Kinetic energy
Movement
Rearranged kinetic formula to make velocity the subject
V= square root 2Ek/ m
Work formula
W= fd
Work
Done when energy is changed from one kind to another. Work is measured in joules
Pressure concept
The smaller the area the more force in one area so more pressure exerted. The larger the area the force is spread out so less pressure is exerted in one area
Pressure is measured in
Nm-2
