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Pg
.42#:xkhls
*±toratl
Verticalve2.HN?fcos45vi:2.2xlOBgn48a=Ong
a. -9.8%2
stx . ? ddy=Omsdxt ? maxheightt
?
Bty= ?
✓f×Vey ,
?
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2
ddy =
VjatttsaistOi@x0Dsin4s9stttte8sagot0-1ss.6est-49ndt2Os.4.9rgat2t1ss.b
}at
0 = . 4.9 at ( it - 31.755 )dt=o or At = 31.755
.? At = 32 s
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b) +St =3 1.8 s
tin = 2.2×1023 cos 45°
ax = 0 Mls
bdx . vixattyaht2
od*Kxfo#as4ft3t8sf
Ddx = 4947 mDdx = 4.9×103 m
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c) Max .
Height→E#ne⇒ .
• on
#9×103MX31.85 ✓
kj-2Cxk2mHsin45Vfy-OhysadjikyAttgaist2ayt-9.8mfr8dYs@ostin45gk9stzf9.o;f¢D
bdy - -2473 - 1239At = 15.95hmm,=l2}Yko3m
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d)
own ]
.
× component-1556mg [Right ]55.6 nls
tµlssbnls
rotted¥ - zzomls o .tai- 45°
Tjzxlinlsttltobidoofad
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FRAMES OF REFERENCE & RELATIVE MOTION SPH4U – Unit 1 Dynamics
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FRAME OF REFERENCE
| Frame of Reference – a coordinate system relative to which motion is described or observed
Examples: - cartesian grid ( x-y axis) - Compass rose
- the ground
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INERTIAL FRAME OF REFERENCE
| A frame of reference that moves at a zero or constant velocity
| A frame in which the law of inertia holds
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NON-INERTIAL FRAME OF REFERENCE
| A frame of reference that accelerates with respect to an inertial frame
| The law of inertia does not hold
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FICTITIOUS FORCE
| An apparent but non-existent force invented to explain the motion of objects within an accelerating (non-inertial) frame of reference
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APPARENT WEIGHT – VERTICAL ACCELERATION
| The magnitude of the normal force acting on an object in an accelerated (non-inertial) frame of reference
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SOLVING PROBLEMS RELATING TO APPARENT WEIGHT IN A NON-INERTIAL FRAME OF REFERENCE