Question

a) If a body is moving then the force on it cannot be zero. Is this statement true or false? Justify your answer.​

Answer 1

We know according to newtons second law

$\boxed{\sf F=ma}$

• F denotes to force
• m denotes to mass
• a demotes to acceleration

If a body is moving then it has a acceleration

• Let mass be 1kg
• Acceleration=1m/s^2

Then

$\\ \sf\longmapsto Force=1\times 1$

$\\ \sf\longmapsto Force=1N$

If force be 0

$\\ \sf\longmapsto 0=ma$

$\\ \sf\longmapsto m=\dfrac{0}{1}=\infty$

$\\ \sf\longmapsto a=\dfrac{1}{m}=\infty$

Hence it can't be posssible