No, the statements you mentioned are not correct. Let's clarify the concepts of uniform velocity, instantaneous velocity, uniform acceleration, and instantaneous acceleration.
Uniform velocity: Uniform velocity refers to the motion of an object when it covers an equal amount of distance in an equal amount of time. In other words, the object moves at a constant speed in a straight line. Uniform velocity does not involve time multiplication. The value of uniform velocity remains constant throughout the motion.
Instantaneous velocity: Instantaneous velocity refers to the velocity of an object at a particular instant in time. It is the velocity of the object at a specific moment or time point. Instantaneous velocity is not obtained by multiplying velocity with time. Instead, it is determined by taking the derivative of the object's position function with respect to time.
Uniform acceleration: Uniform acceleration occurs when an object's velocity changes by an equal amount in every equal interval of time. In this case, the object's acceleration remains constant. Uniform acceleration does not involve time multiplication.
Instantaneous acceleration: Instantaneous acceleration refers to the acceleration of an object at a specific instant in time. Similar to instantaneous velocity, it is not obtained by multiplying acceleration with time. Instead, it is determined by taking the derivative of the object's velocity function with respect to time.
In summary, neither uniform velocity nor uniform acceleration can be obtained by multiplying instantaneous velocity or instantaneous acceleration by time. These concepts are distinct and have their own definitions and characteristics.