An astronaut stands by the rim of a crater on the Moon, where the acceleration of gravity is 1.62 m/s2 and there is no air. 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 time is 6.3 s, what is the depth of the crater? A) 10 m
B) 14 m
C) 26 m
D) 32 m
E) 38 m
Question 2
You throw a golf ball at a massive bowling ball at rest and the golf ball bounces backward from it. After the bounce, compared with the golf ball, the bowling ball has more
A) momentum, but less kinetic energy.
B) kinetic energy, but less momentum.
C) momentum and more kinetic energy.
D) less momentum and less kinetic energy.
E) not enough information
gravity
Topography of the Moon
Gravity field of the Moon
Moon landing
Enceladus (Saturn's Moon)
Utagawa Hiroshige (Ando), Moon Pine, Ueno, No. 89 from One Hundred Famous Views of Edo