0
A cyclist goes around a level circular track at constant speed. Is the cyclist's acceleration zero because her speed is constant?
Wiki User
∙ 15y ago
No. The cyclist is moving at a constant speed, but her velocity is changing. Remember that velocity is speed with a direction vector associated with it. As speed is constant, only direction is changing. But a change in direction is a change in velocity (even if speed is constant), and this requires acceleration in that direction to accomplish the change in direction. You're on the right track, but just recall that acceleration is tied to velocity and not just speed. And note that velocity can change all the time without speed changing. Acceleration must cause the change in velocity. Consider that objects in orbit around the earth move at a pretty constant speed, but accelerate toward the earth all the time. Their speed coupled with their acceleration toward earth cause them to move in an arc - which is their orbital path.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is the correct name for circular motion?
If the motion is truly in the form of a circle, the phrase uniform circular motion describes it appropriately. This means that the object is in a constant state of motion about a fixed point at a constant distance from that point. Circular motion can be considered an acceleration, because an acceleration describes any change in velocity or direction. Since circular motion involves constant change in direction, the object exhibits constant acceleration.
Why tangential acceleration is not produced in uniform circular motion?
Because there is no tangential force acting on the object in uniform circular motion. The proof that there is no tangential component of acceleration is the fact that the tangential component of velocity is constant.
Is a person running in a circular track at 7mph an example of constant velocity at zero acceleration and if so why?
No. The velocity and acceleration are not zero because the direction is changing, thus the velocity and acceleration is changing.
Can an object traveling at constant velocity have acceleration why?
If a velocity or speed is constant there isn't an acceleration. This is because the acceleration is the change in speed or velocity and if it's constant then there sn't a change.
Why the acceleration is constant in free fall?
Because there is only gravitatinal acceleration
Give reason why uniform circular motion is considered as accelerated motion?
Because within circular motion, acceleration is constant
What is the correct name for circular motion?
If the motion is truly in the form of a circle, the phrase uniform circular motion describes it appropriately. This means that the object is in a constant state of motion about a fixed point at a constant distance from that point. Circular motion can be considered an acceleration, because an acceleration describes any change in velocity or direction. Since circular motion involves constant change in direction, the object exhibits constant acceleration.
Why tangential acceleration is not produced in uniform circular motion?
Because there is no tangential force acting on the object in uniform circular motion. The proof that there is no tangential component of acceleration is the fact that the tangential component of velocity is constant.
Is a person running in a circular track at 7mph an example of constant velocity at zero acceleration and if so why?
No. The velocity and acceleration are not zero because the direction is changing, thus the velocity and acceleration is changing.
Under what conditions is it possible to have a constant speed yet a nonzero acceleration?
A body can have a constant speed yet a nonzero acceleration when it is in a circular motion because though it is having a constant speed but the direction in which it is moving keeps changing at each instance and since acceleration is a vector quantity,it becomes non-zero.
Can an object traveling at constant velocity have acceleration why?
If a velocity or speed is constant there isn't an acceleration. This is because the acceleration is the change in speed or velocity and if it's constant then there sn't a change.
Why the acceleration is constant in free fall?
Because there is only gravitatinal acceleration
How are constant speed and constant acceleration different?
There is a huge difference between constant speed and constant acceleration. Constant speed is when the object is travelling constant, no change in its velocity and acceleration or in other words no extra force to speed up. Constant acceleration when the object is acceleration constant, it means that the speed of the object is change at the same rate each second. The acceleration rate at which the object is travelling is constant. for example, when a car is stationary at a traffic light and it starts acceleration, picking up speed but the rate of acceleration will not constant because the amount of force applied differs each second due to the acceleration rate.
What would the acceleration of a turtle that is moving with a constant velocity of 0.25 miles per second to the right?
The acceleration would be zero because the turtle is moving at a constant speed
A constant speed has a slope of zero energy because no acceleration is taking place?
A constant speed has a slope of zero energy because no acceleration is taking place.
Is acceleration constant?
Acceleration may be constant or variable. Of course, in many high-school level problems, it is assumed to be constant, because in that case, the mathematics is simpler.
What is the value of acceleration when a body moves uniformly?
When a body moves with uniform, its acceleration is is constant if v(m/s) t(s) a(m/s2) 4 1 0 8 2 4 12 3 4 16 4 4 (8-4/1)=4 12-8/1=4 hence acceleration is constant.
