Kinematics

Question 1

Define Kinematics

Answer 1

The study of motion.

Question 2

Define motion

Answer 2

The change in an object’s location as measured by an observer.

Question 3

Define scaler

Answer 3

A quantity that has only size, magnitude.

Question 4

Define vector

Answer 4

A quantity that has both magnitude AND direction.

Question 5

Define distance

Answer 5

(d) - The total length of a path traveled by an object in motion. It is measured in meters.

Question 6

Define position

Answer 6

(d with arrow on top) It is the distance and direction of an object from a particular point of reference.

Question 7

Define displacement

Answer 7

(delta d with an arrow) It is the change in position of an object.

Question 8

What is needed for vector scale diagram?

Answer 8

Vector scale diagrams need to be drawn using a specific scale of your choice. It is represented by a directed line segment.

Question 9

How are vectors added?

Answer 9

They are added TIP-TO-TAIL.

Question 10

What does the slope on a position time graph represent?

Answer 10

The slope of a d/t graph represents velocity.

Question 11

What does the area under an acceleration time graph represent?

Answer 11

The area under an a/t graph represents velocity.

Question 12

What does the slope on a velocity time graph represent?

Answer 12

The slope of an a/t graph represents acceleration.

Question 13

What does the area on a velocity time graph represent?

Answer 13

The area under a v/t graph represents displacement.

Question 14

What does constant velocity mean?

Answer 14

Constant velocity means uniform motion. The object will be moving at the same speed which produces a straight-line on a d/t graph.

Question 15

What does non-uniform motion mean?

Answer 15

Non-uniform motion means the object did not travel in a straight-line. This results in a curved d/t graph.

Question 16

What is the independent value in any graph?

Answer 16

The independent value is always time.

Question 17

What is the acceleration on Earth’s surface?

Answer 17

The acceleration is always 9.8 m/s squared [down].

Question 18

What is the sum of the vectors?

Answer 18

The sum of the vectors is called a resultant vector.

Question 19

What does a negative sign mean in physics?

Answer 19

A negative sign is physics means the opposite direction.

Question 20

Why does a projectile make a parabolic motion?

Answer 20

The trajectory of a projectile is in a parabolic motion because the horizontal motion (x) and the vertical motion (y) are independent of each other.

Question 21

What does the horizontal motion of projectile do?

Answer 21

The horizontal motion is constant since there is no force acting horizontally on the projectile.

Question 22

What is the horizontal distance of a projectile called?

Answer 22

The horizontal distance of a projectile is the range.

Question 23

What does the vertical motion do?

Answer 23

The vertical motion of a projectile accelerates due to gravity.

Question 24

What factor does the horizontal and vertical motions of a projectile share?

Answer 24

They both share a common factor of time.

Question 25

Define average velocity

Answer 25

Average velocity is the total displacement (change in position) divided by the total time taken.

Question 26

Define instantaneous velocity

Answer 26

The instantaneous velocity of an object is the velocity at a specific moment in time.

Question 27

How does one find the instantaneous velocity?

Answer 27

To find the instantaneous velocity, one draws a tangent line at the specific moment in time and determines it’s slope.

Question 28

What is a tangent line?

Answer 28

A tangent line is a straight line that touches a curve at a single point and extends in the same direction as the slope of the curve at that point.