Lecture 2: Linear Kinematics

1
Lecture 2 Linear Kinematics
2
Linear Kinematics

• Linear Kinematics
• Kinematics of linear motion
• Description of linear motion
• Description of linear motion of CM
• Regardless of the shape of the object

3
Distance vs. Displacement

• Distance
• Length of the path
• Scalar
• Displacement
• Change in position
• Net effect of motion
• Vector
• Unit m

d
d
4
(No Transcript)
5
Speed vs. Velocity
Indy Airport
Muncie
1 hour 30 min vs. 1 hour
State of Motion How Fast?
6

• Speed
• How fast an object moves
• Scalar
• Vector
• How fast in which direction
• Rate of change in position (displacement)
• Vector
• Unit m/s

7
(No Transcript)
8
Average vs. Instantaneous
9
Acceleration

• Rate of change in speed/velocity

• Unit m/s2

10
Positive vs. Negative

• Positive
• Negative

11
Gravitational Acceleration

• Acceleration due to the gravity

• Slows down upward motion
• Speeds up downward motion

12
Relationships
13
Constant Acceleration
14
Projectile Motion

• Projectile object thrown into the air
• Follows a parabolic trajectory due to gravity
• Gravitational acceleration

15

• Analysis strategies
• Horizontal vs. vertical motion
• Upward vs. downward motion
• Apex vertical v 0

16
Initial Projection Velocity
17
Horizontal Motion
18
Vertical Motion
19
Apex
20
Landing