Gravity
Friction
Good to know about forces
Air resistance
Lab. Forces
100
Isaac Newton
What is the name of the englishman who came up with the ideas of gravity?
100
Friction is the resistive force that occurs when two surfaces travel along each other when forced together. It causes physical deformation and heat buildup.
What is friction?
100
Newtons (N)
What is the unit that we measure force in?
100
Gravity and air resistance.
What is the name of the forces acting on a coin falling to the ground?
100
Sandpaper
What is the name of the surface that gave the largest friction?
200
10N
What is 1 Kg in Newtons (N)?
200
Friction is working backwards and gravity is working downwards and driving force is working straight a head.
What is the force acting on the foot when you are walking?
200
Force meter.
What is the instruments name that you use when you measue force?
200
Air resistance, gravity.
What is forces acting on a sky-diver?
200
The ball, less area, less air resistance
What is the shape of the paper that touched the ground first?
300
The force that makes things fall to the ground on Earth is called gravity. Gravity also holds Earth and the other planets in their orbits around the sun.
What is gravity?
300
Winter tires, sandpaper ect.
What is incerasing the friction name one thing?
300
If two forces are balanced, it means the forces are the same size but are acting in opposite directions.If it is moving, i will continue moving in the same direction and at the same speed, if is still, it will stay still.
What is a balanced force?
300
The Canonball.
What is landing on the ground first the canonball or the feather on Earth?
300
larger
What is "missing", The larger the surface, the...........the air resistance?
400
The mass of an object i how much matter it contains. Measuerd in grams (g) ect. The weight of an object is the force caused by gravity pulling down on the mass of an object.
What is the difference between mass and weight?
400
Lotion, Schampoo, water ect.
What is decreasing the friction?
400
Unbalanced forces can make objects start to move, speed up, slow down or change direction.
What is a unbalanced force?
400
They are landing at the same time.
What is landing on the ground first the canonball or the feather on the moon?
500
The Earth has a greater mass than the moon. The Earth´s gravity is 6 times stronger than the moon´s gravity.
What is it less gravity on the moon than Earth?
500
The friction is working in the opposite direction as the driving force, the meteor gets heated and burns up.
What is happening when a meteor enters the atmosphere?
500
Force has a direction and forces involve things.
What is a force?
500
First they are balanced in the plane and when the person jumps out they are unbalanced.
What are the forces said to be when the sky-diver jumps out of the plane?
500
Resistive force
What kind of force is friction?
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