- #1
petuniac
- 31
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you are playing darts and are wondering how far the dart is dropping on its journey to the target which is 4 m away. The dart leaves your hand at 7 m/s and is accelerating at a rate of -0.3 m/s^2.
work so far...
find final velocity is x-direction from vf^2 = vi^2 + 2ad
vf = 6.8 m/s when dart strikes target
find time it takes to hit target from
vf = vi + at
t = 0.67 s
now, find displacement in y-direction from
d = vit + 1/2at^2
d = -2.2 m
is this correct?
thanks
work so far...
find final velocity is x-direction from vf^2 = vi^2 + 2ad
vf = 6.8 m/s when dart strikes target
find time it takes to hit target from
vf = vi + at
t = 0.67 s
now, find displacement in y-direction from
d = vit + 1/2at^2
d = -2.2 m
is this correct?
thanks