Question

A body starts from rest and moves with constant acceleration for t seconds

Answer 1

HERE IS UR ANSWER:-..

THE BODY IS IN UNIFORM MOTION.

HOPE IT HELPED U!✌✌

Answer 2

A body starts from rest and moves with constant acceleration for t seconds

Let's suppose that a body is falling towards the earth vertically downwards.

So, it's acceleration will be the acceleration due to gravity that is 9.8 m/s^2.

And let's suppose that is starts from rest and falls for 2 seconds.

So,

let's calculate the distance travelled by it in these time intervals that is 0-1 sec and then 1-2 sec.

For, distance travelled in 1 sec

x1 = ut1 + 1/2 * g * (t1)^2

= 0*1 + 1/2*9.8*1^2

= 4.9 m

Now,

distance travelled in 2 seconds.

distance = ut2 + 1/2*g*(t2)^2

= 0*2 + 1/2*9.8*(2)^2

= 19.6 m

So, the distance travelled in the time interval 1-2 sec will be 19.6-4.9 = 14.7 m

Now this distance 14.7 is X2.

Thus, we observe that 14.7 = 3 * 4.9

That is

X2 = 3 x1.