Linear Motion Flashcards
What can forces have?
Magnitude and direction
What is Newton’s 1st Law?
An object will continue in its state of rest or uniform motion in a straight line unless acted upon by an external force
Define Inertia
The tendency of an object to remain at rest or if moving to continue its motion in a straight line.
What needs to happen to overcome Inertia?
A force needs to be applied to an object
What relates to the amount of inertia an object has?
its mass
What is velocity?
A vector quantity
How do you work out velocity?
Displacement/time
What is zero acceleration?
When you aren’t getting any faster. When there is no change in speed.
Define acceleration?
The rate of change of velocity
How do you work out acceleration?
Velocity/time or (distance/time)/time
What is Newton’s 2nd law of motion?
A force applied to an object causes acceleration and/or deformation (a change in shape).
What is the formula for force using acceleration?
Force=mass x acceleration
What is Newton’s 3rd law of motion?
When one force acts on the body or object, an opposite and equal force acts on the body/object.
How do you work out impulse?
force x time
