# Motion velocity and speed

Velocity, Speed, and Motion Velocity and speed are very similar ideas, but velocity is a vectorand speed is not. What are Distance, Displacement, Speed and Velocity? Distance is a measure of how far an object has travelled from its starting point, or how far away it is. Distance is the same as length and is measured in metres. What is the Difference between Distance and Displacement? Displacement like distance above is also a measure of how far an object has travelled from its starting point but displacement also tells you the direction of the object. Distance is a scalar and displacement is a vector. Speed is a measure of how fast an object is moving. Velocity is similar to speed. If an object is not moving then it is called stationary.

The speed or velocity of a stationary object is zero. What is the Difference between Velocity and Speed? The difference between velocity and speed is that velocity is speed in a certain direction.

Speed is a scalar and velocity is a vector. If an object is moving in a straight line, then its speed and velocity will be the same. If the moving object stays at the same speed but changes direction then we say that the velocity has changed because the direction has changed but the speed has stayed the same.

In most of the examples of motion that you will come across, the object will be moving in a straight line. In this case, we will use the word velocity rather than speed.The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of initiativeblog.comty is equivalent to a specification of an object's speed and direction of motion (e.g.

60 km/h to the north). Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies. The physics teacher walked a distance of 12 meters in 24 seconds; thus, her average speed was m/s. However, since her displacement is 0 meters, her average velocity is 0 m/s.

Remember that the displacement refers to the change in position and the velocity is based upon this position change. In this case of the teacher's motion, there is a position change of 0 meters and thus an average. Motion, Speed, Velocity and Acceleration Motion Motion – an object’s change in position relative to a reference point Reference Point The Earth’s surface is used as a common reference point A moving object can be used as a reference point as well Speed Speed is the distance traveled divided by the time interval during which the motion occurred Normally, objects do not travel at a.

Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move.

Change friction and see how it affects the motion of objects. Speed is how fast or slow an object is moving. Velocity is the direction in which the object is moving while change in Velocity is called Acceleration.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of initiativeblog.comty is equivalent to a specification of an object's speed and direction of motion (e.g.

60 km/h to the north). Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies.

What is velocity? (article) | Khan Academy