exam
Maths Puzzle
Numerical Ability
if density of gold is 19.3g/mL and the density of silver is 10.5g/mL devise and experiment to determine the metal in each object
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The equation h= -16t^2+112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. Find the time it takes for the arrow to
reach a height of 180 ft.