A cyclist goes around a level, circular track at constant speed. Do you agree or disagree with the following statement? “Since the cyclist’s speed is constant, her acceleration is zero.” Explain.
A cyclist goes around a level, circular track at constant speed. Do you agree or disagree with the following statement? “Since the cyclist’s speed is constant, her acceleration is zero.” Explain.
A cyclist goes around a level, circular track at constant speed. Do you agree or disagree with the following statement? “Since the cyclist’s speed is constant, her acceleration is zero.” Explain.
Expert Solution & Answer
To determine
To find whether there is any acceleration for the given case.
Answer to Problem 1CQ
No. There is a presence of acceleration, which is called as centripetal acceleration.
Explanation of Solution
Consider any object moving in a circle at a constant speed. The motion obtained by that object is called as uniform circular motion. To obtain such a motion, acceleration must be given in the direction of the center of the circle.
This kind of acceleration is called as centripetal acceleration, which acts towards the center.
Conclusion:
Thus, there is an existence of acceleration in the given case.
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NOT ALLOWED TO USE CENTRIPITAL ACCELERATION EQUATION, must calculate average acceleration!! A car drives around a circular track of diameter 156 m at a constant speed of 33.0 m/s. During the time it takes the car to travel 102 degrees around, what is the magnitude of the car s average acceleration?
13.96 m/s^2
6.98 m/s^2
12.19 m/s^2
0 m/s^2
A girl on a bicycle takes 13.4 s to ride half way around a circular track of radius 17.5 m
What is the girl's average speed (in m/s)?
What is the magnitude of her average velocity (in m/s)?
Answer the following concisely, in no more than three sentences.
In uniform circular motion, we have an acceleration and the speed doesn't change. But in projectile motion the speed does change under constant acceleration. Why are they both classified as uniform acceleration phenomena?
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