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Problem A) A penny is thrown vertically upward with a speed of 13 m/s. Exactly 2...

Problem A) A penny is thrown vertically upward with a speed of 13 m/s. Exactly 2 seconds later a nickel is thrown upward along the same path as the penny at a speed of 15 m/s. Ignoring air resistance, (a) at what time do the penny and nickel collide? (b) At what height does the collision occur? (c) Is the penny on its way up or down when the collision occurs?

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Answer #1

Uz 15 m/s +ve 9n 2 Sesonds pennyう V+at 2 = 13-9,4JX2 13 2) _219, 8) 22 = 6.4m 6.62 m)s a niekek is haowrn the penn hight et Coming alown Now Relative motion う t- O 296 Seco nds C. Down

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