Mt.Everest is more than 8 000 m high.How fast would an object be moving if it could free fall to sea level after being released from an 8 000-m elevation? (Ignore air resistance. )
A)396 m/s
B)120 m/s
C)1 200 m/s
D)12 000 m/s

Question

Quizplus · Accepted Answer

The velocity of an object in free fall is given by the formula v=sqrt(2gh), where v is velocity, g is the acceleration due to gravity (9.8 m/s^2), and h is the height. Substituting the values, we get v=sqrt(2*9.8*8000) = 396 m/s. Therefore, the correct choice is A.

MtEverest Is More Than 8 000 M High