Unit 2-4 Kinematic Equations

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Unit 2-4 Kinematic Equations
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Equation One

• Average Velocity displacement/time
• vu/2 d/t
• d t(v u)/2
• use s instead of d (stadio is latin word for
  distance)
• s t(uv)/2

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Equation Two

• v u at

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Equation Three

• v2 u2 2as
• This comes from equation one and two
• from equation two t (v-u)/a
• Substitute for t into equation one
• s t(uv)/2
• becomes s (v-u)/a x (uv)/2
• becomes s (v2 u2)/ 2a becomes
• v2 u2 2as

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Equation Four

• s ut ½ at2
• This comes from equation 1 and 2
• From equation one vuat
• Substitute for t in equation two
• S t(u (u at))/2
• Multiply out the ts,
• S (ut ut at2)/2 (2ut at2)/2 ut ½ at2

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Questions

• Equation One An Oldsmobile Intrigue starts at
  30.0m/s and finishes at 60.0 m/s for 25.0s,
  calculate the distance traveled.
• Equation Two A Chevy Blazer accelerates from 0.0
  60.0 m/s in 6.0 seconds (a) Calculate the
  acceleration
• Equation Three A BMW 2002 TII has an
  acceleration of 20.0 m/s2. If it starts at rest,
  calculate its final speed after 12.0 meters.
• Equation 4 A Volkswagen Jetta, has an
  acceleration of 15.0 m/s2, calculate the distance
  traveled after 16.0 seconds, if starting from
  rest.
• Homework p69q9-12 NG