Question

Are the equations of motion applicable for the analysis of motion under gravity near the surface of the Earth? Why?

• A. Yes, since ‘g’ is a constant at the near surface
• B. No, because ‘g’ varies
• C. No, because g = 0
• D. None of the above

Answer 1

The correct option is A

Yes, since ‘g’ is a constant at the near surface

At the surface of the Earth, the acceleration due to gravity is constant and it is equal to 9.8 m/s² . All the laws of motion are valid for constant acceleration. Thus option A is correct.