Contact Forces
What is friction?
Force that opposes motion when two suufaces rub against each other.
What is Gravity?
A force of attraction between two objects.
What makes us slow down when riding a bike?
(Hint:One word)
Friction
What is used to measure force?
A Spring Scale
Which force slows down moving objects?
Friction
What is Normal Force?
A force exerted by a surface on an object resting on that surface.
What is Magnetic Force?
A force created by magnets.
Why does a dropped apple fall toward the ground?
(Hint:One word)
Gravity
What units are used for Force?
Newtons(N)
How many Contact Forces are there?
6
What is Tension?
A force created when two objects pull on a rope, string, wire or cable in opposite directions.
What is Electric Force?
An invisible force created by electrically charged particles.
Why do our hair strands move apart after rubbing a balloon on our head?
(Hint:Two words)
Electric Force
Who discovered the laws of motion?
Isaac Newton
What force pushes up against gravity when you stand on the ground?
Normal Force
What is Applied force?
An applied force is a force applied by a person or object onto another object.
What force keeps the planets in orbit around the sun?
Gravity
Why does a compass needle always point north?
(Hint:Two words)
Magnetic Force
What does F=m*a stand for?
Force=Mass*Acceleration
What is a contact force?
A force when two objects physically touch each other.
What is Buoyant Force
A fluid pushes upward on an immersed object.
How many non-contact forces are there?
3
What force is used whenever you're driving a car?
Frction
What is air resistance?
The force that resists motion through air.
What is the difference between a Contact and Non-Contact force?
Contact force requires physical contact while a non-contact force can react from a distance.