P2 - Newtons Laws, Friction & Terminal Velocity


Terms in this set (...)

What is Newtons 1st Law?
An object will remain stationary or in constant motion, unless acted upon by an external force
What is Newtons 2nd Law?
The force acting on an object is equal to the rate of change of momentum
What is the equation for Newtons 2nd Law?
F = ma
What does friction do?
It makes things slow down and stop
What will happen in each of these three situations
a - The driving force is equal to the friction force
b - The driving force is greater than the friction force
c - The driving force is less than the friction force
a - the object will move at a constant speed
b - the object will accelerate
c - the object decelerate
For falling objects, what is the relation between resistance and velocity?
Resistance is proportional to velocity, in other words, the faster it goes, the more resistance it feels
Explain Terminal Velocity
As an object accelerates, the resistance also increases
When the resistance is equal to the speed, the object stops accelerating and moves at constant velocity. This is the terminal velocity