Forces

what are forces?

• Pull or push

• Most forces are contact

• Most forces are non contact

• Magnetism and Gravity

what forces are non contact

• Gravity

• Magnetism

• Friction

• Tension

what do you measure forces with?

• Newtons

• grams

• kg

• litres

weight meaning

• mass x gravitational Field Strength

• mass x Friction

• mass x weight

• weight x gravitational field strength

which to ends of a two magnets arracks each other

• South Pole and South Pole

• North Pole and South Pole

• South pole and North Pole

• North pole and north pole

why does the moon stay in orbit with the earth

• the moon stays in orbit because of the gravitational field

• because of friction

• because of pull

• because of a applied force

what does a force do to an object

• it changes the motion of an object

• it changes the shape of an object

• the speed

• the gravity

magnetic definition

• Magnetic force: magnetic force, attraction or repulsion that arises between electrically charged particles

• force of attraction between two objects, Earth’s gravity pulls on all objects

• a force that resists motion between two surfaces that are pressed together

• Anytime you see something moving, you can be sure that a force created its motion.

Friction definition

• a force that resists motion between two surfaces that are pressed together

• force of attraction between two objects, Earth’s gravity pulls on all objects

• 1.force: magnetic force, attraction or repulsion that arises between electrically charged particles

• Anytime you see something moving, you can be sure that a force created its motion.

gravity definition

• force of attraction between two objects, Earth’s gravity pulls on all objects

• force: magnetic force, attraction or repulsion that arises between electrically charged particles

• a force that resists motion between two surfaces that are pressed together

• a force that resists motion between two surfaces that are pressed together