JEE Main Physics Class 11 Motion in a Straight Line and Plane Part 1 Questions

For the body starting from rest, distance travelled (x1) is given by
x1=0+

1

2

at2
⇒x1=

1

2

at2 For the body moving with constant speed
x2=vt∴x1−x2=

1

2

at2−vt
at t=0,x1−x2=0
This equation is of parabola.
For t<

v

a

; the slope is negative
For t=

v

a

; the slope is zero
For t>

v

a

; the slope is positive
These characteristics are represented by graph (b).