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19 Nov 2019
In Fig. 4 - 48a, a sled moves in the negative x direction at constant speed vs while a ball of ice is shot from the sled with a velocity V rightarrow 0 = V0x i^ + V0y j^ relative to the sled When the ball lands, its horizontal displacement ?xbg relative to the ground (from its launch position to its landing position) is measured. Figure 4 - 54b gives ?xbg as a function of vs. Assume the ball lands at approximately its launch height. What are the values of (a)v0x and (b)v0y? The balls displacement ?xbs relative to the sled can also be measured. Assume that the sled's velocity is not changed when the ball is shot. What is ?xbs when vs is (c) 10 m/s and (d) 20 m/s?
In Fig. 4 - 48a, a sled moves in the negative x direction at constant speed vs while a ball of ice is shot from the sled with a velocity V rightarrow 0 = V0x i^ + V0y j^ relative to the sled When the ball lands, its horizontal displacement ?xbg relative to the ground (from its launch position to its landing position) is measured. Figure 4 - 54b gives ?xbg as a function of vs. Assume the ball lands at approximately its launch height. What are the values of (a)v0x and (b)v0y? The balls displacement ?xbs relative to the sled can also be measured. Assume that the sled's velocity is not changed when the ball is shot. What is ?xbs when vs is (c) 10 m/s and (d) 20 m/s?