Question

Answer with figure if needed.random answer will be reported.​

Answer 1

10m/s

32m/s

83m/s

None of these

Answer :

C

Solution :

At any instant x2+y2=52

Differentiating w.r.t. time 2xxdt+2ydydt=0

Here dxdt=2,dydt=u⇒u=83m/s