Motion Forces Net Force all of the forces

Motion & Forces Net Force - all of the forces on an object Equilibrium - when the net force equals zero * the object is not moving * the object is moving at constant speed

Motion & Forces Vectors - arrows that show both a magnitude and direction of a force tail (the starting end) tip (the arrow end) * the length shows the magnitude * where it is facing shows the direction

Motion & Forces Vector Addition - two ways Parallelogram Method -draw two parallel lines - make your resultant vector (dashed line) from the beginning to the end *you will know to use the parallelogram method because both vectors are connected at the tails

Motion & Forces Vector Addition - two ways Parallelogram Method parallel arrows resultant vector

Motion & Forces Vector Addition - two ways Tip to Tail Method -connect the tip of one vector to the tail of the other vector - make your resultant vector (dashed line) from the tail of the first to the tip of the second *you will know to use the Tip to Tail method because both vectors are separate

Motion & Forces Vector Addition - two ways Tip to Tail Method resultant vector

Motion & Forces - five forces you need to know * FP - Force of Push or Pull * FN - Force of Normal * Ff - Force of Friction * Fg - Force of Gravity * FT - Force of Tension

Motion & Forces Force of Push/Pull (FP) * This is caused when a person pushes or pulls an object. * It is not always present in every situtation.

Motion & Forces Force of Normal (FN) * This is the force that prevents one object from moving through another object. * It is a contact force. * It is perpendicular to the surface.

Motion & Forces What causes objects in motion to slow down and becoming motionless even though there appears to be no outside force? Force of Friction (Ff) It is a contact force. It opposes motion.

Motion & Forces Force of Gravity (Fg) * It is also known as the weight. * It always pulls straight down towards the center of the Earth. * It is found by multiplying the objects mass x gravity Force of Gravity = mass x gravity Fg = m x g g is always 9. 8 m/s 2

Motion & Forces Force of Tension (FT) * It is the force when there is a rope, string, cable, etc. * It always pulls parallel along the length of the rope

Motion & Forces Draw and label forces for a book sitting on a table. FN Fg

Motion & Forces Draw and label forces for a book sliding across a table at constant speed. FN FP Ff Fg

Motion & Forces Draw and label forces for a book sliding across a table with an acceleration. FN Ff Fg FP

Motion & Forces Draw and label forces for a book sitting on a slanted table but is not moving. FN Fg Ff