BEMB Linear Kinematics

Question 1

3 ways kinematics can be defined as?

Answer 1

• The pattern or sequencing of movement with respect to time.
• The appearance of a motion
• Visually observable aspects of techniques or form.

Question 2

What is linear displacement

Answer 2

the distance from initial to final location
vector equivalent to linear distance

Question 3

Path of distance travelled vs displacement (skater graph)

Answer 3

The distance a skater travels may be measured from the track left on the ice. The skater’s displacement is measured
in a straight line from start to finish.

Question 4

What is running speed the product of?

Answer 4

Stride length and stride frequency

Question 5

Linear velocity VS Linear speed

Answer 5

Velocity = displacement / time
Speed = distance / time
Velocity is vector
speed is linear

Question 6

What is acceleration?

Answer 6

Rate of change in linear velocity
a = v2 - v1 / t

Question 7

Will the ball be at the same position when rising and falling?

Answer 7

Yes they will be similar as the velocity of a projectile is symmetrical about the apex.

Question 8

What factors influence the trajectory of a projectile?

Answer 8

Projection angle - the direction of projection with respect to the horizontal

projection speed - The magnitude of projection velocity.

Relative projection height- the difference between projection and landing height.

Question 9

What are the 2 factors that affect flight time

Answer 9

Initial vertical velocity
Relative projection height

Question 9

What are the 2 things that affect horizontal displacement

Answer 9

Horizontal velocity
relative projection height

Question 10

What are the 2 things that affect vertical displacement?

Answer 10

Initial vertical velocity
Relative projection height

Question 11

What are the 3 things that affect trajectory?

Answer 11

Initial speed
Projection angle
Relative projection height