Find the initial speed of the rock

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Reference no: EM1315309

Q1. A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial speed of the rock.

Q2. A small motor boat is capable of maintaining a 9.00 m/s speed in still water. It attempts to cross a long straight 0.60 km wide river that has a constant 3.60 m/s current.

Reference no: EM1315309

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Find the initial speed of the rock : A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..

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