A pitching machine is programmed to pitch baseballs horizontally at a speed of 1

Question

A pitching machine is programmed to pitch baseballs horizontally at a speed of 146 km/h. The machine is mounted on a truck and aimed forward. As the truck drives toward you at a speed of 95 km/h, 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 s pitching machine pitched ball relative pitching machine d ball relative of the relative to the truck to the truck relative to you to you 292 km/h 197 km/h zero 95 km/h 241 km/h 146 km/h 51 km/h

Explanation / Answer

pictching machine is fixed on truck.

so the speed of the pitching machine = 95 km/h

speed of truck = 95 km/h

the speed of the pitching machine relative to truck = 95-95 = 0 (zero)

speed of ball relative to machine = 146 km/h

speed of ball relative to truck (same as machine) = 146 km/h

speed of man = 0

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

                                            = 95 -0 = 95 km/h

speed of ball relative to me = 146 + 95 = 241 km/h

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