a) One lap is "\\phi=2\\pi" radians. The time required to make one complete lap is
b) Find the tangential acceleration:
Find the centripetal acceleration:
where "v" is the velocity after the car made one half of the circle accelerating at the rate "a_t":
The centripetal and tangential accelerations are always perpendicular to each other when considered in circular motion.
Now draw the situation:
The total acceleration "a" at 1/2 of the lap is
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