Question

In a vacuum on the earth surface, all freely falling bodies

• A. have the same speed
• B. have the same velocity
• C. have the same force
• D. have the same acceleration

Answer 1

Answer: (D)

have the same acceleration

a force acting on the body is given by $F=\frac{GMm}{r^2}$

here $m$ is different for different bodies hence force acting on different bodies will be different.

acceleration is $\frac{force}{mass}=\frac{GM}{r^2}$, this is independent of the mass of the body or type of the body.

also, speed or velocity depends on time for which it is accelerated because acceleration is the same.

hence correct option is D.