Q U 10. [-/2 Points] DETAILS OSUNIPHYS1 4.3.P.052. MY NOTES ASK YOUR TEACHER PRACTICE ANOT Mt. Asama, Japan, is an active volcano. In 2009, an eruption threw solid volcanic rocks that landed 1 km horizontally from the crater. If the volcanic rocks were launched at an angle of 38 with respect to the horizontal and landed 820 m below the crater, find the following. (a) their initial velocity (Enter the magnitude in m/s.) m/s (b) their time of flight (in s) Additional Materials Reading 11. [-/1 Points] DETAILS OSUNIPHYS1 4.3.P.054. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The Lunar Roving Vehicle used in NASA's late Apollo missions reached an unofficial lunar land speed of 5.0 m/s by astronaut Eugene Cernan. If the rover was moving at this speed on a flat lunar surface and hit a small bump that projected it off the surface at an angle of 210, how long (in s) would it be "airborne" on the Moon? (The gravitational acceleration on the Moon is one-sixth that of Earth.) Additional Materials Reading 12. [0/1 Points] DETAILS PREVIOUS ANSWERS OSUNIPHYS1 4.3.P.058. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You throw a baseball at an initial speed of 12 5 m/s at an angle of 250 with respect to the horizontal. What would the ball's Initial speed have to be (in m/s) at 250 on a planet that has twice the acceleration of gravity as Earth to achieve the same range? Consider launch and impact on a horizontal surface. 156.25 x m/s Additional Materials Reading