Problem 4-57 Projectile

An astronaut strikes a golf ball on the Moon where the magnitude of the acceleration due to gravity is 1.6m/s2. The ball takes off with a velocity of 32m/s at an angle 35 above the horizontal (the moon’s horizontal) and lands in a valley 15m below the level where it started. Determine the golf ball's: (a) maximum height (b) time of flight (c) horizontal distance traveled.
[Ans. (a) 1.1×102m   (b) 24s   (c) 6.2×102m]


The first thing required is a good sketch of the physical situation. Which of the following best represents this problem?

Three sketches of possible physical situations.

(A)

(B)

(C)