Kinematics

Question 1

Kinematics

Answer 1

The description of motion in terms of an object’s position, velocity, and acceleration

Question 2

Displacement

Answer 2

Change in position of an object
displacement = final position - initial position
Is a vector so it takes direction into account

Question 3

Velocity

Answer 3

How fast an objects position changes
avg velocity = displacement/time
Average velocity always points in the same direction as displacement
Vector that specifies both speed and direction

Question 4

Speed

Answer 4

Magnitude of the velocity vector NOT average velocity

Scalar = no direction and never negative

Question 5

Acceleration

Answer 5

How fast an objects velocity changes
avg acceleration = change in velocity/time
If the acceleration points in the same direction as the initial velocity, then the objects speed is increasing
If the acceleration points in the opposite direction as the initial velocity, then the objects speed is decreasing
If the acceleration is perpendicular to the initial velocity, then the objects speed is constant

Question 6

Slope of a position vs. time graph

Answer 6

Velocity

Question 7

Slope of a velocity vs. time graph

Answer 7

Acceleration

Question 8

Area of a velocity vs. time graph

Answer 8

Displacement

Question 9

Free Fall

Answer 9

An object moving only under the influence of gravity