KinematicsHard

Question

A body is at rest at x = 0. At t = 0, it starts moving in the positive x-direction with a constant acceleration. At the same instant another body passes through x = 0 moving in the positive xdirection with a constant speed. The position of the first body is given by x1(t) after time ′t′ and that of the second body by x2(t) after the same time interval. Which of the following graphs correctly describes (x1 - x2)as a function of time ′t′?

Options

A.
B.
C.
D.

Solution

x1(t) = at2
x2(t) = vt
x1 - x2 = at2 - vt

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