At time =0s the particle starts moving alopng x – axis. If its kinetic energy uniformly with time T , the net force acting on it must be prorportional to

1. T^1/2
2. constant
3. T
4. 1/squareroot T

The Right question is this – – – -At time =0s the particle starts moving alopng x – axis. If its kinetic energy uniformly with time T , the net force acting on it must be prorportional to-----------

As per question we know that the K.E increase with time T

So K,E = k*T

0.5 m v²= k T

so v = sqrt (2k T / m)

a = dv / dt = ½ sqrt (2k.mT)

So Force F = ma

F = m *½ sqrt (2k.mT)

Hence Force is prportaional to the1/squareroot T

Regards,

Nirmal SIngh
Askiitians Faculty