If a body starts from rest and moves with uniform acceleration, then

Correct option is A

The correct answer is:(a) v∝t

When a body starts from rest and moves with uniform acceleration, the following equations of motion apply:

1. v=u+at, where v is the velocity, u is the initial velocity (0 in this case), a is acceleration, and t is time.

• Since u=0, v=at, indicating that v∝t

2. Uniform acceleration implies a constant rate of velocity change.

3. The relationship s∝t2 can be understood from the second equation of motion: 

s = ut+12at2

1. For v2∝s, this comes from the third equation of motion: v2=u2+2as

Additional Information:

• s∝t: Incorrect, because the displacement sss is proportional to the square of time under uniform acceleration. From the equation s=ut+12at2, s∝t2 when u=0.

• v∝s: Incorrect, because v2=u2+2as indicates that v2∝s (not v∝s).

s∝t​: Incorrect, as s∝t2 under uniform acceleration, not t.