Forces and Newton’s Laws. Tina R. Walters 2011. Forces. A push or a pull. What is a Net Force?. T he combination of all the forces on an object. Determines the motion of the object . Same Direction Add the forces together Opposite Directions The difference
Tina R. Walters
A push or a pull
between the 2 forces and in the
directions of the larger force.
When the net force acting on an object is zero, the object will remain at rest. If the object is already in motion. It will continue to move in a straight line.
that is sliding
An object acted on by a force will accelerate in the direction of the force.
Acceleration = net force (N)
(meters/second) mass (kg)
a = Fnet
Forces are measured in newton
N = kg-m/s2
Gravitational forces between you and the Earth.
Point in an object that moves as if all the object’s mass were concentrated at that point.
For every action there is an equal but opposite reaction.
Action-Reaction Pairs don’t cancel each other
A force that lifts rockets
Only force acting on an object is gravity.
Occurs in a free fall when the weight of an object seems to be zero.