A
Joule
What is the unit of energy/work ?
Newton
What is the unit of force ?
metre per second squared
What is the unit of acceleration ?
Pascal
What is the unit of pressure ?
second
What is the standard unit of time ?
F = ma
What is the formula for force/ Newton's second Law ?
P = F/A
What is the formula for pressure ?
Ek = 1/2 mv2
What is the formula for kinetic energy ?
Ep = mgh
What is the formula for potential energy ?
a = change in speed / change in time
what is the formula for acceleration ?
lift force
What force keeps a bird/plane aloft ?
support force
what force does a solid surface provide to oppose gravity ?
friction
what contact force resists motion ?
weight
what is gravity force ?
unbalanced force
what is the net or total force on a body ?
Energy is neither created nor destroyed
What is the law of conservation of energy ?
F = mg
How is weight force calculated ?
The area under the graph
How is distance calculated in a speed -time graph ?
The slope of the graph
How is speed calculated in a distance time graph? OR
How is acceleration calculated in a speed -time graph ?
For every force there is an equal and opposite reaction force
What is Newton's third law of motion ?
The ramp requires a lower force than lifting straight up
What advantage does (lifting using) a ramp provide ?
The camel's larger soles results in lower pressure
Why does a camel not sink in the sand ?
Frictional drag converts some of the energy to heat
Why does the work done not always equal the kinetic energy gained ?
zero acceleration
(eg) what do balanced forces cause ?
(eg) How would you calculate speed or height for a falling/ rising object ?