45th B.P.S.C. (Pre) 2001
Force is the product of –
aMass and velocity
bMass and acceleration✓ Correct
cWeight and velocity
dWeight and acceleration
Explanation
The rate of change of momentum is called force. If the mass of an object is m, it moves with initial velocity u, and after t seconds it attains velocity v, then: Rate of change of momentum $$ \vec{F} = \frac{\Delta\vec{P}}{t} $$ $$ \vec{F} = \frac{M(\vec{V} - \vec{u})}{t} $$ m = $\vec{a}$ where $\vec{a} = \frac{\vec{v} - \vec{u}}{t}$
general-science