IPC EXAM 1

formula for average speed

formula for acceleration

m = mass X velocity

formula for momentum

f = mass X acceleration

formula for force

Newtons Law of Inertia

an object at rest remains at rest and an object in motion remains in motion; both with a constant speed and direction

Newton’s Second Law

acceleration of an object is equal to the net force acting on it divided by the object’s mass

formula for newton’s second law

acceleration = net force/mass

Newton’s Third Law

whenever an object exerts a force on a second object, the second object exerts equal and opposite force on the first object

distance

a scaler, always positive; length of the path traveled between two points

displacement

a vector, can be negative or positive; doesn’t matter how far you traveled, just how far you are from your starting point

1 Newton is equal to

1 kg m/s²

what SI units are used for force

newtons (N)

what units do we use for acceleration

m/s^2

SI units for momentum

Kg m/s

SI units for speed/velocity

m/s (or whatever fits the equation, kg/s, m/hr, etc.)

SI units for distance and displacement

meters (or whatever fits the equation)

a box sliding across the floor would slow down because of…

friction

terminal velocity

can’t exceed certain speed

projectile motion

motion of falling object after it is given initial forward velocity

when calculating average speed use sig figs to know how many …

decimal places your answer will have

net force

overall force acting on an object after all the forces combine

is south positive or negative?

negative

is west positive or negative?

negative

instantaneous speed

speed measure at a particular instant; right then and there

static friction

acts on non-moving objects

sliding friction

oppresses direction of motion of a sliding object

rolling friction

change in the point of rolling contacts

fluid friction

opposes the motion of an object through a fluid

a scaler, always positive; when there is no motion it is zero

speed

a vector, can be positive or negative; shows speed and direction

velocity

a vector; can be positive or negative

acceleration

accelerates in a positive direction and/or increases speed

psoitive acceleration

changes towards a negative direction and/or decreases speed

negative acceleration

0 acceleration means there is

either constant velocity or no motion

acceleration formula