Year 10 Physics Flashcards
Calculating work (joules)
work = force x displacement
Calculating Weight force)
weight = mass x Gravity or acceleration (9.8m/s^2 if not stated otherwise)
Newton’s First Law of Motion
An object at rest stays at rest and an object in motion stays in motion at the same speed and direction unless acted upon by an unbalanced force.
Newton’s Second Law
the acceleration of an object is directly proportional to the force acting on the object and is inversely proportional to the mass of the object.
Newton’s Third Law
For very action there is an equal and opposite reaction
Rearranging f=m x a
m = f / a a = f / m
normal force
the perpendicular contact force exerted by a surface on another object
maximum height vs velocity
at maximum height, velocity = 0m/s
Calculating potential energy
mass x 9.8 x height
calculating kinetic energy
1/2 x mass x velocity^2
Calculating Average Velocity
displacement (s) / time (t)
Calculating acceleration
final velocity - initial velocity / time
‘u’ in calculations
initial velocity
‘v’ in calculations
final velocity
’s’ in calculations
displacement
