Unit One: Motion

Question 1

Dynamics

Answer 1

Involves both a description of motion and the forces that produce it.

Question 2

Uniform motion

Answer 2

The simplest type of motion which follows a straight line in a specific direction at a constant speed. Nothing is changing

Question 3

Non-uniform motion

Answer 3

Motion which is not at a constant speed or not in a straight line, or both

Question 4

Translator or rectilinear motion

Answer 4

Motion in a straight line

Question 5

Circular

Answer 5

Motion in a curved path

Question 6

Scalars

Answer 6

Quantities specified by their sizes and do NOT include direction. They have magnitude, NO direction. Scalars include, volume, mass, time, temperature

Question 7

Vector

Answer 7

Quantities having both magnitude and direction. Including, acceleration, velocity, force, and displacement. This is when we use tip to tail method

Question 8

Resultant vector

Answer 8

Drawn from the tail of the first vector to the tip of the final vector

Question 9

Perpendicular vectors

Answer 9

If when you draw the scale diagram it shows two perpendicular vectors (90degree) the magnitude and resultant can be found with pythagorean theorem and the direction by a trig function

Question 10

2 non perpendicular vectors

Answer 10

Determined by the laws of cosine and sine.

Question 11

Distance

Answer 11

Measure of length. Scalar quantity (no direction needed). Symbol d. SI unit is meter.

Question 12

Position

Answer 12

Location of object relative to reference point. Vector quantity, requiring reference point and direction. Symbol is d WITH ARROW ON TOP. SI unit is meter

Question 13

Displacement

Answer 13

Change in position of object. Vector quantity. DOES NOT REQUIRE REFERENCE POINT. Symbol d WITH ARROW ON TOP. SI unit is meter

Question 14

Acceleration