The amount of work required to stop a moving object is equal to ______?

چلتی شے کو روکنے کے لئے درکار کام کی مقدار ______ کے برابر ہے؟

The mass of the object times its acceleration

The velocity of the object

The kinetic energy of the object

None of these

Work required to stop an object is equal to the change in its kinetic energy (Work-Energy Theorem).

Since kinetic energy is given by $KE = frac{1}{2} m v^2$ , the work needed to bring the object to rest is equal to its initial kinetic energy.