vocab - science

Meter - SI unit of distance, abbreviated m; equal to approximately 39.37in

Speed - equals the distance traveled divided by the time it takes to travel that distance

Average speed - equals the total distance traveled divided by the total time taken to travel the distance

Instantaneous speed - the speed of an object at one instant of time

Velocity - speed and direction of a moving object

Kilogram - SI unit of mass, abbreviated kg; equal to approximately 2.2lbs

Acceleration - equals the change in velocity divided by the time for the change to take place; occurs when an object speeds up, slows down, or turns

Triple beam balance - scientific instrument used to measure mass precisely by comparing the mass of a sample to known masses

Mass - the amount of matter in an object

Inertia - tendency of an object to resist a change in its motion

Momentum - a measure of how difficult it is to stop a moving object; equals the product of mass and velocity

Law of conservation of momentum - states that the total momentum of objects that collide with each other is the same before and after the collision