If the distance S covered by a moving car in rectilinear motion with a speed v in time t is given by S = vt, then the car undergoes

In rectilinear motion, when the distance (S) covered by an object is given by the product of speed (v) and time (t), it implies that the speed remains constant throughout the duration of motion [1]. According to the principles of kinematics, an object moving along a straight line with a constant speed is defined as being in uniform linear motion [1]. In such a state, the object covers equal distances in equal intervals of time [1]. Since the direction of motion in a rectilinear path is constant, a constant speed results in a constant or uniform velocity [1]. Under these conditions, the acceleration is zero because there is no change in the magnitude or direction of velocity over time. Therefore, the formula S = vt specifically describes a car undergoing uniform velocity, distinguishing it from accelerated or non-uniform motion where velocity would vary [1].

Sources

1. [1] Science-Class VII . NCERT(Revised ed 2025) > Chapter 8: Measurement of Time and Motion > 8.4 Uniform and Non-uniform Linear Motion > p. 117