Map Sapling Learning A pitching machine is programmed to pitch baseballs horizon

Question

Map Sapling Learning A pitching machine is programmed to pitch baseballs horizontally at a speed of 87 mph. The machine is mounted on a truck and aimed backward. As the truck drives away from you at a speed of 45 mph, the machine shoots a ball toward you. For each of the object pairings listed below, determine the correct relative speed. The speed of the The speed of the The speed of the The speed of the pitching machine relative to the truck pitched ball relative to the truck pitching machine relative to you pitched ball relative to you 87 mph 45 mph 132 mph zero 42 mph 170 mph 129 mph

Explanation / Answer

pictching machine is fixed on truck.

so the speed of the pitching machine = 45 m/h

speed of truck = 45 m/h

the speed of the pitching machine relative to truck = 45-45 = 0

speed of ball relative to machine = 87 m/h

speed of ball relative to truck (same as machine) = 87 m/h

speed of man = 0

speed of machine relative to me = speed of machine - speed of me

= 45 - 0 = 45 m/h

speed of ball relative to me = 87 + 45 = 132 mph

Please rate my answer, good luck...

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