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Файл:Lectures Physics 1 / Lect 2.ppt
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- •Quiz 1
- •Quiz 2
- •Quiz 3
- •Course of lectures «Contemporary Physics: Part1»
- •Position, Velocity, and Speed
- •Instantaneous Velocity and
- •Acceleration
- •Acceleration
- •Motion Diagrams
- •One-Dimensional Motion with Constant Acceleration
- •One-Dimensional Motion with Constant Acceleration
- •One-Dimensional Motion with Constant Acceleration
- •The average velocity v of an object moving through a displacement during a
- •Average acceleration
- •Two-Dimensional Motion with Constant Acceleration
- •Two-Dimensional Motion with Constant Acceleration
- •Two-Dimensional Motion with Constant Acceleration
- •Projectile Motion
- •Projectile Motion
- •Projectile Motion
- •Even though an object moves at a constant speed in a circular path,
- •The acceleration vector in uniform circular motion is always perpendicular to the path
- •In many situations it is convenient to describe the motion of a particle
- •Figure 2.6. The motion of a particle along an arbitrary curved path lying
- •The total acceleration vector a can be written as the vector sum of
- •Quick Quiz 1 If a car is traveling eastward and slowing down, what
One-Dimensional Motion with Constant Acceleration
One-Dimensional Motion with Constant Acceleration
(2.9)
(2.10)
(2.11)
(2.9) → (2.11)
(2.12)
(2.13)
One-Dimensional Motion with Constant Acceleration
(2.14)
is a displacement vector
The average velocity v of an object moving through a displacement during a time interval (Δt) is described by the formula
(2.15)
Note that the average velocity between points is independent of the path taken.
(2.16)
Average acceleration
(2.17)
(2.18)
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