Physics final M 2-12

Inertia (M 2)

The property of an object that resists changes in its state of motion.

Newton’s first law of motion (M2)

An object continues to do whatever unless a force is exerted upon it

Force (M2)

Push or pull

Net force (M2)

Sum of all force acting on an object

Vector quantity (M2)

A force with both magnitude and direction

Mechanical equilibrium (M2)

When the net force of something is zero

Normal or Support force (M2)

The upward force exerted by a surface on an object to balance the weight of said object

Equilibrium rule (M2)

The sum of all forces acting on an object or system equals zero

Speed (M3)

The distance covered per unit of time

speed = distance/time

Instantaneous speed (M3)

The speed at any instant

Average speed (M3)

The whole distance covered divided by the total time of travel

total distance covered = average speed x time

Velocity (M3)

The speed and direction of an object

Scalar quantity (m3)

Only includes magnitude

Constant Velocity (m3)

constant speed and direction

Acceleration (m3)

How quickly velocity changes

Acceleration = change in velocity/time interval

Free fall (m3)

An object falling under the influence of gravity

10m/s² = the acceleration in free fall

Instantaneous velocity (m3)

v = gt (g= acceleration)