12.2 Rectilinear Kinematics: Continuous Motion

Question 1

The s-t graph

Answer 1

Question 2

Average speed & Average velocity

Answer 2

total distance traveled divided by the total time. This is different from the average velocity, which is the displacement divided by the time.

Question 3

Kinematics

Answer 3

study of the geometry of the motion.

Question 4

Rectilinear kinematics

Answer 4

refers to straight-line motion.

Question 5

The a-t graph

Answer 5

The a–t graph can be constructed from the v9t graph in a similar manner:

dv/dt = a, slope of v-t = acceleration

Question 6

Rectilinear Kinematics.

Answer 6

The kinematics of a particle is characterized by specifying, at any given instant, the particle’s position, velocity, and acceleration.

Question 7

The relationship a ds = v dv is derived from

Answer 7

a = dv>dt and v = ds>dt, by eliminating dt.

Question 8

Speed

Answer 8

refers to the magnitude of velocity.

Question 9

Kinetics

Answer 9

study of the forces that cause the motion.

Question 10

The v-t graph

Answer 10

To construct the v-t graph given the s–t graph,the equation v = ds/dt should be used, since it relates the variables s and t to v. This equation states that:

ds/dt =a, slope of s-t graph = Velocity