Question

A point moves in a straight line so that its displacement X m at time t sec is given by x2= 1+t2, its acceleration in m/sec2 at a time t sec is?

Answer 1

x2=t2+1

taking its differentiation,

2x*(dx/dt)=2t

x*(dx/dt)=t

again taking differentiation for acceleration,

x*(d2x/dt2) + (dx/dt)2 = 1

x*(d2x/dt2) = 1 – (dx/dt)2

x*(d2x/dt2) = 1 – (t/x)2                  (because x*(dx/dt)=t)

(d2x/dt2) = (1 – (t/x)2)/x

(d2x/dt2) = 1/x – t2/x3

 

put t2 = x2 -1

(d2x/dt2) = 1/x3

Answer 2

Answer:

1/x3

Explanation:

Hope it helps

Please follow me

Mark me braniest ❤️