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For a car moving around a circular track at a constant speed the acceleration is?
constant speed=0 acceleration Acceleration is the change in speed. If the speed doesn't change(ie constant) the acceleration is zero.
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.
Can velocity of an object change when its acceleration is constant?
Certainly! By definition, the acceleration is the change, so it will change unless that amount is zero.
Is a constant force necessary for a constant acceleration?
Yes. The equation that relates force to acceleration is very simple:F = M A ,orA = F / M .The acceleration is directly proportional to the force, and if the force doesn't change,then the acceleration doesn't change. (' M ' is the mass of the thing that's being'forced' to accelerate.)So constant force produces constant acceleration, and is the only way to do it.
Why gravitational constant is constant while when acceleration due to gravity is change?
gravity of earth is constant in any plane but the acceleration may vary becoz of irregular plane
