Q. Astronauts on our moon must function with acceleration because of gravity of 0.170g.
If an astronaut can throw a certain wrench 14 {rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the similar starting speed in both places?
Q. A projectile is shot directly away from Earth's surface. Ignore the rotation of Earth.
(a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is three-quarters of escape speed from Earth?