Types of force Flashcards
What will happen if the net force acting on something is zero?
It will remain at rest or continue moving at a constant velocity
What will happen if the forces are unbalanced?
The velocity of the object will change- it will accelerate
How would you calculate the size of a force?
F=ma
What is the unit for force?
The Newton (N)
Define the Newton
Where 1kg of mass accelerates at 1ms2
How can we draw forces?
Forces are vector so we can represent them by drawing arrows
A car is moving a constant velocity towards the right, and there are 4 forces acting on them. Name them.
1) Arrow pointing up = Normal contact force
2) Arrow pointing down = Weight
3) Arrow point to left = Drag forces
4) Arrow pointing to right = thrust
In terms of forces what is weight?
It is a gravitational force that acts on mass
What is the equation to calculate weight?
W=mg
What do electromagnetic forces act on?
Charges
Name two force that arise from electromagnetic interactions.
1) Friction
2) Normal contact force
What a forces act in particles in nuclei?
Two types of nuclear forces act on them
Name three forces that arise from electrostatic forces
Pushes and pulls and tension in a stretched spring
In terms of electrons and atoms what happens when you push a door.
The electrons in atoms in the surface on your hand repel electrons in atoms on the surface of the door
