Question

In vacuum all freely falling objects:

A. have the same speed 

B. have the same velocity

C. have the same acceleration

D. have the same force

Answer 1

In vacuum all falling objects will have same acceleration.

The constant acceleration is due to gravitational force of earth and is known as acceleration due to gravity given by: g = G\(\frac{M}{R^2}\)

where,

G = Gravitational Constant = 6.67 x 10^-11 Nm²kg^-2

M = Mass of Earth

R = Radius of Earth

From above, we see that all variables in the equation are constant. Thus g doesn’t depend on any other factors, and hence is constant.

Hence, option C is correct.