An object is dropped in an unknown planet from a height of 50m, it reaches the ground in 2s. The acceleration due to gravity in this unknown planet is _______.
A. g = 20ms-2
B. g = 25ms-2
C. g = 15ms-2
D. g = 30ms-2
Answer:B
An object is dropped in an unknown planet from a height of 50m, it reaches the ground in 2s. The acceleration due to gravity in this unknown planet is _______.
A. g = 20ms-2 B. g = 25ms-2 C. g = 15ms-2 D. g = 30ms-2