Question

42.
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 x-direction with a constant speed. The position of the first
body is given by xi(t) after timeť 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'?
(B)
(A)
"
n
(C)
(D)​

Answer 1

Explanation:

x

1

(t)=

2

1

at

2

x

2

(t)=vt

⇒(x

1

+x

2

)=

2

1

at

2

−vt

Plot (x

1

−x

2

)vs t.

solution