A race car travels 40 m/s around a banked (45° with the horizontal) circular (radius = 0.20 km) track. What is the magnitude of the resultant force on the 80-kg driver of this car?
a. 0.68 kN
b. 0.64 kN
c. 0.72 kN
d. 0.76 kN
e. 0.52 kN
B
Physics & Space Science
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When the vector sum of three co-planar forces, 
, 
, and 
, is
parallel to , we can conclude that and
A.
must sum to zero.
B.
must be equal and opposite.
C.
must have equal and opposite components perpendicular to .
.D.
must have equal and opposite components parallel to .
.E.
must have equal and opposite components parallel and perpendicular to .
.
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