For each diagram below, create a free diagram of the ball at the top of the path - PowerPoint PPT Presentation

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For each diagram below, create a free diagram of the ball at the top of the path

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For each diagram below, create a free diagram of the ball at the top of the path As you view the following video and animation think about the forces in your free ... – PowerPoint PPT presentation

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Title: For each diagram below, create a free diagram of the ball at the top of the path


1
For each diagram below, create a free diagram of
the ball at the top of the path
  • As you view the following video and animation
    think about the forces in your free body diagrams
    2-D Motion

2
Independence of Motion
  • Notice that the veridical motion of the projected
    ball is identical to the vertical motion of the
    falling ball
  • Notice that the projected ball travels forward at
    constant speed

3
Horizontal Component of Velocity
Newton's 1st Law
  • Is constant
  • Not accelerated
  • Not influenced by gravity
  • Follows equation
  • dx Vixt 1/2axt2

0
4
Vertical Component of Velocity
Newton's 2nd Law
  • Undergoes accelerated motion
  • Accelerated by gravity (9.8 m/s2 down)
  • Vfy Viy at
  • dy Viyt 1/2ayt2
  • Vfy2 Viy2 2aydy

For all y-direction projectile equations ag
5
Perpendicular components of motion are
independent of each other
6
Independence of Motion
Please visit the Physics Zone Projectile Motion
Lesson Archer in Truck Proof III at
sciencejoywagon.com to access this video.
7
This may be a useful way to organize your data.
Remember to solve x variables with x variables
and y variables with y variables. TIME links
the x and y variables
8
Projectile fired at an angle
  • As you view this video, notice the independence
    of motion.
  • Notice that the vertical acceleration is downward
    and constant
  • The ball slows during ascent and speeds up
    during descent
  • When angles are involved, the appropriate
    components of velocity must be used and the sign
    used to indicate the direction of velocity and
    acceleration is very important

9
A bouncing ball captured with a stroboscopic
flash at 25 images per second.MichaelMaggs Edit
by Richard Bartz
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