Studied by 1 person
weight and terminal velocity
mass
the amount of matter an object contains, measured in g/kg with mass balance
weight
a force on an object caused by GRAVITY, measured in Newtons with Newton meter
weight
weight is a force
mass
it is not a force
mass on Earth
the same as mass on the moon
weight on Earth
different on moon
weight (formula)
mass (kg) x gravitational field strength (N/kg or m/s²)
terminal velocity
e.g.
→ when a skydiver jumps out of a plane, initially the only force acting on them is the WEIGHT
→ this means that they ACCELERATE DOWNWARDS
→ as their speed INCREASES, the force of AIR RESISTANCE increases
→ after a while, the AIR RESISTANCE becomes the SAME SIZE as the as their WEIGHT
→ this means that the resultant force is now ZERO.
→ this means that they STOP ACCELERATING and they travel at a CONSTANT SPEED
= we call this TERMINAL VELOCITY
