Question

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

• 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.

Near the surface of the Earth, the acceleration due to gravity is constant and it is equal to 9.8 $m{s}^{-2}$. All the laws of motion are valid for constant acceleration.