No, any turning object undergoes acceleration because the direction is always changing. The acceleration vector points into the circle of rotation, and the velocity vector is a tangent line to the circle at any given point. The equation is Centripetal Acceleration=v^2/r
No, you can't do that. Any change of direction is an acceleration.
It's not possible. Acceleration is defined as a change in velocity, so if the speed is constant, the acceleration is zero. If the acceleration is zero, so is the net force.
A car going at a constant speed is not accelerating (its rate of acceleration is zero).
the car could be traveling in a straight line and slowing down (negative acceleration), speeding up (positive acceleration) or maintaining constant speed (zero acceleration).
0 Zero
centripetal acceleration must be considered. dont forget gravity!
Zero.
It's not possible. Acceleration is defined as a change in velocity, so if the speed is constant, the acceleration is zero. If the acceleration is zero, so is the net force.
A car going at a constant speed is not accelerating (its rate of acceleration is zero).
the car could be traveling in a straight line and slowing down (negative acceleration), speeding up (positive acceleration) or maintaining constant speed (zero acceleration).
No, If a car moves around a circular race track with any constant speed, the acceleration is directed towards the centre. So it has a centripetal acceleration. The tangential acceleration would be irrelevant unless the car has an instantaneous tangential velocity of zero. Then the centripetal acceleration is zero. However, this would only exist for that small instant in time.
You need the initial and final velocities, and time interval to answer this question.
Straight line at a constant speed = no acceleration
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I'm not a scientist, but the following seems reasonable to me. If your frame of reference is the earth's surface, then it seems clear that an object can have zero velocity and zero acceleration. You could even have non-zero velocity and zero acceleration. What seems impossible is to have zero velocity and non-zero acceleration. When you think of accelaration think of changing velocity. A car moving straight down the highway at a constant speed of 55 mph is neither speeding up nor slowing down. Though it has velocity, there is no change in its velocity so acceleration will be zero. For a car parked on the side of the road, on the other hand, its velocity will be zero but what about its acceleration? Is velocity changing? No, so it will have zero velocity and zero acceleration.Yes.
centripetal acceleration must be considered. dont forget gravity!
zero
Zero!!