Speed doesn't "become" velocity. Velocity is simply speed as a vector, meaning that not only the magnitude is specified (as in the speed), but also the direction.
speed and velocity becomes equal when a body is moving on a straight road without changing its direction.
If speed/velocity is doubled and mass remains constant, then kinetic energy becomes quadrupled.
Taking a turn on the highway.
That will depend not only on the escape velocity, but also - very importantly - on the object's speed.
Terminal velocity. When the parachutes cannot fall any faster.
Remember that velocity is a vector quantity which means it needs two criteria to be defined; a magnitude, and a direction. When we discuss the magnitude of velocity, what we are talking about is the speed (30m/s, 45mph, etc). Those examples are examples of speed; it is only when we add a direction that it becomes 'velocity'. So, the difference is: "25m/s" is a speed, but "25m/s east" is a velocity. Speed (the magnitude of velocity) is calculated by taking the total displacement divided by the total time. Speed=(distance travelled)/(time it takes). Hope this helps
yes.acceleration means change of velocity and not speed to be more precise.in a circular motion with constant speed the particle or the object constantly changes its direction.the direction of velocity is directed along the direction of the tangent at that point.although speed remains constant the velocity changes infinite number of times.so the particle is said to be accelerating.there is always instantaenous acceleration.but the average acceleration becomes zero after every round because velocity becomes the same after every round.
as air become warmer velocity of sound increases
velocity is speed with direction; velocity is a vector and speed is a scalar
Speed in a given direction is velocity.
Speed has no direction, velocity does.
Velocity and speed are not synonyms.