Assume a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 meters per square second.
 By how much would its speed reading in- crease each second?
 a. 10 m/s
 b. 40 m/s
 c. A value dependent on its initial speed 4. 30 m/s
 d. 5 m/s
 e. 20 m/s