The speed.
The speed changes.
Velocity changes when the direction of the motion changes.
Dinosaurs and mammals both changed their speed. These changes in speed were due to their constantly changing demands and environment.
Yes. The velocity changes when the direction of motion changes, because the definition of 'velocity' is 'speed and the direction'. If either speed or direction changes, then we say the velocity has changed. Notice that if the direction changes, then the velocity changes even if the speed doesn't. "Velocity" is not just a bigger word that you use for 'speed' when you want to sound smart. They mean different things.
Yes, the wavelength of a wave can be changed by altering the frequency of the wave. This relationship is described by the equation speed = wavelength x frequency, so if the frequency changes, the wavelength will change accordingly to maintain the speed of the wave.
The speed.
Speed limits change for lots of reasons. Limits have changed to conserve fuel and for accident reduction.
There are two parts to acceleration: direction and speed. When either of these aspects are changed, then acceleration changes.
Speed and position are related in that speed is the rate at which an object changes its position over time. The greater the speed of an object, the faster it changes its position. The position of an object at any given time can be calculated by integrating the speed over time.
Yes, the speed increases when a liquid changes to a gas, And the attraction between particles also decreases. :) -Anouymous
The speed of the car has not changed. What has changed is the direction of travel. Velocity is a combination of speed and direction, so has changed. Newton's laws say that a body will continue to travel at its starting velocity unless acted on by an external force. There are two forces working here. 1 a force reducing the northward speed of 88 km/h to zero, and 2 a force accelerating the car eastward up to 88 km/h.
When the object is acted upon by an outside force.