I need help with this Physics question

Physics
Tutor: None Selected Time limit: 1 Day

An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2 . To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the depth of the crater is 120 m, how long does it take for the rock to fall?

Jun 7th, 2015

Thank you for the opportunity to help you with your question!

Thank you for the opportunity to help you with your question!

s= ut+ 0.5 a (t)^2 

where s= dist traveled
u=initial velocity which is zero in this case
t= time taken to travel 's' distance
a=acceleration (due to gravity on moon i.e 1.62 m/s^2 )

120=0+0.5*1.62*t^2

148.148=t^2

t=12.17 seconds

Please let me know if you need any clarification. I'm always happy to answer your questions.Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 7th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Jun 7th, 2015
...
Jun 7th, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer