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Unformatted text preview: University, R. Nejat g 2 i g
9.8 m / s 2 initial
PHYS 1L03, Fall 2013, McMaster University, R. Nejat 14 OneDimensional Motion OneDimensional Motion
Example: Example : • A driver who is driving at 11.4 m/s sees a deer
“frozen” in the headlights, immediately applies
the breaks and slows with an acceleration of 3.80
m/s2.
– If the deer is 20.0 m from the car when the
breaks are applied, how close does driver
come to hitting the deer?
– How much time is needed for the driver to
stop?
v (t )
x (t ) vi
xi at
vi t 1
2 at 2 PHYS 1L03, Fall 2013, McMaster University, R. Nejat v (t ) 2
i vi2 2 a ( x xi ) initial TwoDimensional Motion
• Break a twodimensional problem into two onedimensional problems. Examples:
• The child skipping along the
sidewalk, a twodimensional motion
– A combination of two simultaneous
motions:
• Upanddown motion
• Motion along the side walk • Projectile Motion
– Vertical accelerated motion
– Horizontal uniform motion
PHYS 1L03, Fall 2013, McMaster University, R. Nejat PHYS 1L03, Fall 2013, McMaster University, R. Nejat TwoDimensional Motion
Projectile Motion
• Two simultaneous Motions
– Horizontal Motion
• Zero acceleration
• Constant velocity – Vertical Mo...
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 Spring '13
 DrNejat

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