Force Flashcards
What is resultant force?
The sum of forces acting on an object
What happens when the resultant force is zero?
The forces are balanced and the object is stationary
Is force a vector or a scalar?
Force is a vector
How do you indicate the size of the force?
The length of the arrow
What is force measured in?
Force is measured in Newton
What is scalar and vector?
Scalar has size and no direction, however vector has both size AND direction.
What do we use to show direction?
Arrows (-> <-)
4 examples of vectors
Displacement, velocity, gravity, acceleration
4 examples of scalars
Distance, speed, time, temperature
Formula for force?
F = M (mass of object) x A (acceleration)
Does gravity have contact, resistive, and what is the direction of action
No, sometimes, downwards
Does thrust have contact, resistive, and what is the direction of action
Yes, no, direction of motion
Does friction have contact, resistive, and what is the direction of action
Yes, yes, opposite of objects
Does normal have contact, resistive, and what is the direction of action
Yes, yes, perpendicular
Does air resistance have contact, resistive, and what is the direction of action
Yes, yes, against
