Two baseballs are thrown vertically up from the ground at the same speed, one on Earth, and one on Mars. The baseball on Earth reaches a maximum height of 50 m. Which ball hits the ground first and by what time difference? (gMars = 0.38 gEarth) a) Mars by 7.4 s
b) Earth by 7.4 s
c) Earth by 9.7 s
d) Mars by 3.7 s
e) Earth by 10.4 s

Which of the following would not be taken into consideration when describing the quality of a sound

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?

What does the law of conservation of mass state?