Define angular impulse .

Define nerve impulse. What is threshold stimulus for a nerve cell?

Define - angular dispersion.

Define angular momentum Derive the relation between angular momentum and torque.

Define angular momentum ( vecL ) and torque ( vecr ). Show that (dvecL)/dt = tau .

Define angular momentum (vec(L)) and torque (vec(tau)) Show that (d vec(L))/(dt) = vec(tau) .

Define angular acceleration. What is its unit?

Define impulse and derive impulse-momentum theorem.

Define impulse. Write down its S.I. unit.

Define impulse. A cricket ball of mass 150 g moving with speed 12 m cdot s^(-1) is hit by a bat so that the ball is turned back with a velocity of 20 m cdot s^(-1) . Calculate the impulse received by the ball.

Direction of nerve impulse is reversed in nerve with