Constant speed around a curve is changing velocity.
A car going at a constant speed is not accelerating (its rate of acceleration is zero).
A car moving at constant speed in a straight line is also moving at constant velocity.
Anything that doesn't move; anything that moves at a constant velocity (for example, a car on a straight road, at a constant speed of 70 km/hour).
because your going downhill
Constant speed around a curve is changing velocity.
An object will move at constant speed until acted upon by a force.
It could move with a constant speed and not at constant velocity. Because the direction is ever changing. Speed is a scalar but velocity is a vector quantity which has direction aspect too.
A car going at a constant speed is not accelerating (its rate of acceleration is zero).
A car moving at constant speed in a straight line is also moving at constant velocity.
It depends on your setting. If the net force on an object is zero than the object will move with a constant speed. It will also move with a constant speed (but not velocity!) if a force forces the object to move in a circular motion.
If a car travels in a straight line with a constant speed, then the car has a constant velocity (determined by direction and speed), and the acceleration is 0.
Anything that doesn't move; anything that moves at a constant velocity (for example, a car on a straight road, at a constant speed of 70 km/hour).
Straight line at a constant speed = no acceleration
because your going downhill
a car traveling the speed limit
when a body move with uniform speed