The automobile beltway around many cities is approximately circular. Suppose that you start driving at point A on the east side
of the beltway and drive counterclockwise at an unchanging 90 km/hr (Figure 3.13). As you pass point B on the north side, what is your speed? Your velocity?
2 answers:
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The go-kart's velocity after time
is given by
where is its initial velocity and
is its acceleration. After
, the go-kart stops completely, so
where because we know the go-kart is slowing down.
Angle turned by the wheel is given by the kinematics as
now here we know that
t = 2.50 seconds
So here total angle that the wheel turn is given as
Speed of the wheel after 2.5 s
now angular deceleration is given as
time taken to stop
now total time is given as