NMAT Physics - Mechanics

Vectors

Physical quantities with both magnitude and direction

ex: Force, velocity

Scalars

Quantities that have magnitude but no direction

ex: Mass, speed

Displacement

Change in position that goes in a straight-line path from the initial point to the final point

Unit: m

ex: You can do a snake route but this is just going to calculate the distance from the start and end point

Average velocity

Displacement divided by time

Acceleration

Rate of change of an object’s velocity

Linear motion

When solving for time, there will be 2 values:

• Initial launch

• Impact on the ground

At maximum height of the projectile, what is the velocity?

0

Projectile motion

What happens to the horizontal and vertical component of projectile motion

Static Friction (f_s)

Force that needs to be overcome to set an object moving

ex: pushing a cabinet that’s not moving at all

Kinetic Friction (f_k)

Opposes motion of objects moving relative to each other

ex: pushing a car while its moving