What is the balls average speed
A student throws a ball vertically upward such that it travels 7.0 to its maximum height.If the ball is caught at the initial height 2.0 after being thrown, what is the ball's average speed?
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Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When pack is squeezed the pouch breaks and the solid dissolves, lowering the temperature. NH4NO3+H2O yields NH4NO3 heat is
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