Question

A rain drop of mass $0.1g$ is falling with uniform speed of $10cm/s$. What is the net force the drop?

• A. ${10}^{-2}N$
• B. ${10}^{-3}N$
• C. $2\times {10}^{-3}N$
• D. $zero$

Answer 1

The correct option is D $zero$

Uniform speed means that a body is traveling at a constant speed along a straight line. So it has no acceleration. Thus net weight $=ma=0$.