Question

The equation for impulse is_______

(a) F∆t=m∆v

(b) F∆t=mu

(c) F∆t=mT

(d) F∆t=mRT

The question was asked in examination.

The above asked question is from Impulse Momentum Equation in portion Fluid Dynamics of Fluid Mechanics

Answer 1

The correct choice is (a) F∆t=m∆v

To explain I would say: Impulse is equal to the net force times the length of time over which the force is applied on the body of the fluid. On the right hand side, we have the change in momentum. Thus, option ‘a’ is the most suitable one.