Just like the Sun and the Moon, stars appear to move towards the west. The reason is that Earth rotates in the opposite direction - towards the east.
It is moving either one way or the other. Linear motion is straight line motion. Either the object is moving toward point A or away from it toward point B.
It is moving either one way or the other. Linear motion is straight line motion. Either the object is moving toward point A or away from it toward point B.
An example of acceleration in the direction of motion is a smooth spherical stone dropped from the roof of a building on a windless day. All the motion is straight down, toward the center of the earth, and so is the acceleration.
An example of acceleration in the direction of motion is a smooth spherical stone dropped from the roof of a building on a windless day. All the motion is straight down, toward the center of the earth, and so is the acceleration.
Heat motion is random.
They make random changes in the direction of their movement.
Uniform motion refers to motion with constant (including zero) velocity: that is, the same speed and in the same direction. Non-uniform motion can refer to motion in which the speed or direction of motion are not constant throughout the period under consideration.
No.. this is impossible. Velocity must have a constant direction and speed to remain constant, it may have a constant speed, but the direction in a circle constantly changes. If it suddenly were to have constant direction, then the motion would go off on a tangent.. making it linear motion, not circular. In circular motion, velocity constantly changes. Always.
inertia (an object in motion wants to keep moving in that direction)
A force acting on the ball, at an angle to its line of motion, will cause its direction of motion to change.
The direction of acceleration is always in the same direction as the force. That's nominally toward the center of the Earth. (Technically, it could be slightly off-center, if you happen to be in the presence of a large, massive, non-symmetrical piece of the Earth, like a mountain. But it's pretty accurate to simply say that it's always toward the center of the Earth.)
By definition, friction is opposite of the direction of motion.