Physics Final Exam - Grade 11

• Significant figures: are the valid digits in a measurement

• Precision is the degree of exactness of a measurement

• Accuracy: describes how well the results of a measurement agree with the accepted / true value

•Independent variable: the variable that is being charged or manipulated in an experiment

•Dependent variable: the variable that depends on the independent variable.

•Dimensional analysis: the method of treating units as algebraic quantities that can be canceled.

• Vector: is a quantity with both size (magnitude) and direction

• Scalar: is a quantity with only magnitude.

• Distance: the total length of travel irrespective of the direction of the motions

•Displacement: the distance and direction between the points

•Resultant: the vector sum of all the forces on an object

• Speed: the rate of change of distance

• Velocity: the distance traveled in a specific direction

• Instantaneous speed: the speed at any instant.

• Average Speed: the ratio of the total distance traveled to the time taken

•Instantaneas Velocity: the speed and direction of an object at a particular instant

•Position: is the location of an object relative to an origin

• Average Velocity: the ratio of change in position to the time interval during which the change occurred.

• Instantaneous position: the location of an object at a particular instant

Acceleration: the rate of change of velocity with respect to time

• Free fall: when the only force acting on an object is gravity

Terminal velocity: the point where air resistance equals gravity.

• Contact force: exists when an object from the external world touches a system and thereby exerts a force on it.

• Field forces: are exerted without contact.

• Free body diagram: a physical representation that shows the forces acting on a system.

• Weight: the gravitational force experienced by an object

• Mass: the amount of matter in an object

• Inertia: the tendency of an object to resist changes in velocity.

•Equilibrium: when the net force of an object is zero

•Projectile: an object shot through the air.

• Trajectory: a projectile's curved path through space.

• Uniform circular motion: the movement of an object at a constant speed around a circle with a fixed radius.

• Centripetal acceleration: acceleration that always points toward the center of a circle.

•Centripetel force: a force directed toward the center of a circle.

•Circumference: how far an object in uniform circular motion travels in one period.

- The horizontal velocity of a projectile is constant

•Range: the horizontal displacement of the projectile.

Max. Height: the vertical displacement of the projectile.

•Angular velocity: the change in angular rotation over the change in time.

Period: the time taken for one complete circuit.

• Frequency: the number of revolutions in one second